c4 m-lok rail (carbine cut). Price: USD 280 Posted: 10/14/2021 1:18:10 PM EST. c4 m-lok rail (carbine cut)

 
 Price: USD 280 Posted: 10/14/2021 1:18:10 PM ESTc4 m-lok rail (carbine cut)  In Stock

83. C4 M-LOK Rail (Carbine Cut) – $280. View Details. The C4 system uniquely features the use of a standard mil-spec "toothed" barrel nut, which makes for an. C4 M-LOK Rail (12in) $310. Skinniest rail of the 3, great feeling gun, mlok and tons of space on rail. $320. C4 Rail (7in - 12in) $230. 10% Bonus Bucks. 5" Centurion MLok Rail? If one doesn’t have a front sight, or if one is building an AR from scratch, or if the length of one’s barrel precludes the >10. Centurion Arms C4 M-Lok Handguard - Carbine Pocket 12" $332. This design allows the installation of the rail on an. Centurion C4 Mlok rail with fsb cutout for carbine length AR15. Posted: 10/29/2017 9:53:05 AM EST [#44] Quote History. Address: PO Box 122 Flatwoods, KY 41139; Phone: 502-771-2157; Welcome to Thoroughbred Armament Company LLC LOGIN / REGISTER; FAQ; ENGLISH; USD; 0. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Features. This vertical grip is an excellent choice. Has no more than 100 rounds through the barrel. View Profile View Forum Posts View Articles Site Sponsor Join Date Jul 2010 Posts 9,005 Feedback. 5 fsb barrel/Vortex FH, Centurion C4 M-LOK Rail (Carbine Cut), Vltor A5/H2 buffer, SBA3, ATC Gold flat AR trigger, which is amazing! The original owner had it built by Monty himself. Color. Printable View. NoveskeFan. Description The Centurion patented C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. 56/. Save Up to $14. C4 Rail, Carbine Length Cutout Rail Handguard. It is a lightweight, rugged, 2-piece free float rail that, when installed, provides a continuous 12 O'clock rail and MLOK slots for the 3,6, and 9 O'clock positions. This design allows the installation. C4 M-LOK Rail (12in) - BLEM. Cut the delta ring assembly and handguard cap off and bolt the handguard on. 1. PSA 16" Mid-Length Pencil 5. C4 MLOK MID CUT The MLOK C4 rail system is based off the patented quad rail version. 5 inch like the. Just go an email announcing the release of their new rail. 95: MAG583: Magpul M-LOK® Aluminum Rail 9 Slot: $23. View Profile View Forum Posts View Articles Member Join Date Mar 2012 Location Mass Posts 179. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12o clock rail and MLOK slots for the 3,6, and 9 o clock positions. C4 Rail (7in - 12in) -BLEM. Thanks for the reply. You could do the handguard with a vise and a Bev Block and a barrel wrench. C4 Rail, 12in Front. I have the Centurion Arms C4 Carbine cutout rail on my 6920 and really like it. 24 models Aero Precision AR15 Atlas S-One M-LOK Handguard (86) As Low As (Save Up to 22%) $133. Posted: 10/14/2021 9:57:24 PM EST [#4] Centurion hands down…and I know I’m going to catch heat for this but the Troy rails are decent too. 5 hours or an 800 lumens model. $199. 5" Wide. Use lots of tape to protect your rail, dremels and files like to make sudden jumps and will nick your handguard, otherwise shouldn't be too bad. 00 In Stock 7. $273. eBay Product ID (ePID). All PREMIUM features, plus: - Access to our constantly updated research database via a private dropbox account (including hedge fund letters, research reports and analyses from all the top Wall Street banks) - Notifications for new posts, breaking news and comment replies (coming soon) - Discord-based chat and commentary rooms (coming. C4 MLOK MID CUT. NYH1. C4 Rail (7in - 12in) $230. 99. Quick view Add to Cart. About this product. CENTURION ARMS C4 M-LOK 12" Cutout Carbine FSP AR15 Rail Front Sight M16 AR-15 MLOK Handguard. For those who want something stronger, seek the CMR. It’s now 2021, and skinny m-lok rail. C4 MLOK CARBINE CUT The MLOK C4 rail system is based off the patented quad rail version. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. nanners83. Windham Weaponry – Best Adjustable 9mm Carbine. VISM AR15 M-LOK Carbine Handguard (148) $79. In Stock. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. We often hear a lot about how great the M-LOK® system is for mounting accessories on AR-15 handguards. Now is where it gets interesting. This design allows the installation of the. 00 In Stock C4 M-LOK Rail (12in) $310. Looking for a Centurion C4 Quad Rail with carbine FSP cut out. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Helpful Positive Review Vism drop in carbine rail by michael. Just share pics and some general specs. This strong and lightweight 2-piece design can be installed easily onto standard AR-15 uppers after removing the delta ring and hand guard cap, a task easily accomplished with hand tools. 5" Black. NEW Centurion Arms C4 m-lok rail; If this is your first visit, be sure to check out the FAQ by clicking the link above. Material: 6061 T6. 00. Home; Shop All; FIREARMS/PARTS; AR15/AR10; UPPER PARTS; FOREARMS SYSTEMS ; AR15 HANDGUARDS ; Centurion - C4 Rail (7in - 12in)Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I am looking at these two handguards: Centurion C4 M-LOK Rail (Carbine Cut) BCM® MCMR-7 (M-LOK® Compatible* Modular Rail) I really like the Centurion due to the extra length on the sides going around the front sight tower. 00 In Stock Newsletter Signup Centurion Arms' patented C4 rail system is a lightweight, rugged, two piece, free float hand guard to. In Stock. Slightly knock down the newly cut edges, just enough to get it smooth. Stickman. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. The M-LOK® C4 rail system is based off the patented quad rail version. 2 Options. I was originally going to go with a simple Magpul SL handguard until I came across the C4 carbine cut rail. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12o'clock rail and MLOK slots for the 3,6, and 9 o'clock positions. Got it this afternoon, came a day early. 95: MAG606: Magpul M-LOK® Push Button QD Sling Swivel Mount: $18. Guntec USA 16. Show Printable Version; 12-14-20, 12:57 #121. The 2-piece design allows for installation to a standard barrel nut without removal of the muzzle device or front sight post. Finish: type 3 hard coat anodized. MSRP: $486. GTIN. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 95. . View Profile. 99 Save Up to $65. . 39". it feels balanced. Add to Wish List Add. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Add to Wish List. 00) Pre-Order, Shipping by Mid. Save 10% MSRP: $ 135. . 5" middy Noveske Afghan X3, 10. Magpul M-LOK Polymer Rail Section, 11 Slots - MAG593 . I’m not saying it’s the best rail, but it’s my favorite M-Lok rail,. Thread: NEW Centurion Arms C4 m-lok rail. I also ordered a Magpul The M-LOK Hand Stop and their M-LOK Rail Cover, Type 2 NYH1. plus 1. 223 based AR platform systems. As. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I am looking at upgrading the rail to an mlok rail. The handguard, also known as a “rail” is one of the most important parts of an AR-15 or AR-10 type rifle. NoveskeFan Replies: 0 Views: 299 4/26/2023 12:49 PM WTS: Wilson Tennis Racquet Bag SBR Grayman Sneaky Undercover Incognito Stealth. 00. Tyrant CNC NexGen 15 Inch M-LOK Rail for AR-15 The Tyrant CNC NEXGEN 15 AR Handguard is a state-of-the-art design that merges form, function, and comfort. Mintyfresh790. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. That buffer combo works great. The C4 rail also features built in QD sling. MSRP: $89. These accessories are designed to mount to M-LOK® compatible handguards. View Profile View Forum Posts View Articles Member Join Date Jul 2011. Geissele Automatics 13. Posted: 10/14/2021 10:10:18 PM EST. It's listed at only weighing 9. One end slip under the Delta ring and is secured by four set screws to the barrel nut. Centurion Arms C4 Rail 9. CENTURION ARMS C4 M-LOK Mid Length Cut RAIL SYSTEM Midlength AR15 2 Piece MLOK Cutout. Buncheong. Centurion Arms C4 Rail Handguard, Carbine Cutout, 9. The 14. I appreciate it. Description Centurion Arms LLC is happy to announce the C4 MLOK® rail. RealeyesRealizeRealLies BCM 16" RECCE MK2 DkBrz, Custom Mk12 Mod1 built by Monty LeClair, 16" Middy w/ HCS RECCE barrel, A5, Young NM BCG, SSP, Geissele NM rail, Ops Inc. Had it installed and taken off by West Coast Armory. Centurion Arms announces the C4 M-LOK Rail. The MI Combat Rail has a strong attachment and has the offset Mlok slots, so it would get my vote for a 10. MountainRaven. The Centurion patented C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. View Details Centurion Arms C4 Rail System - Mid Cutout . First off 300BO has far less gas than 5. Add to Wishlist + Out of stock. 1. $350. 99. Cut the delta ring assembly and handguard cap off and bolt the handguard on. Black Friday! ( 143 )Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. The CMR system clamps to a proprietary barrel nut that can be installed on 5. 14. Just Right Carbine – Best AR. Magpul Ladder Rail Panel Cover Picatinny Rail 18 Slots Black Made in USA Black. 95. Made in USA. Building my first rifle and need some help. Geissele Mk16 rail 13. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It is a lightweight, rugged, 2-piece free float rail that, when installed, provides a continuous 12. Quote: Originally. Thread Tools. C4 M-LOK Rail (Carbine Cut) by Centurion Arms. C4 MLOK CARBINE CUT. Remember Me? What's New? Forum The forward portion of a midlength FSB is approximately 11 1/8” from the face of the receiver. 95 $183. 56 mm, M4) is a 5. View Product . Posted: 7/1/2023 11:38:45 PM EST. I am not really liking it. ETA: the midlength cutout rails are an inch shorter at their longest points than the carbine FSP 12” models, on the spec sheet, so I guess there’s that. Find and buy perfect handguard for your AR-15. Last edited by AAMP84; 01-30-21 at 02:23 . C4 M-LOK CARBINE CUT. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. ERGO Ultra-Lite S Key Mod Replacement Handguard-Dark Earth - - 4807-DE. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12o’clock rail and MLOK slots for the 3,6, and 9 oâ clock positions. These Picatinny Rails crafted by the experts at UTG Pro are built. The C4 system is. AT3™ Pro Quad Rails – Free Float AR15 Handguards – 4 Lengths Available. 50) Available NOW C4 M-LOK Rail. The most common weapon accessories can be mounted to these AR Handguards & Forends from Centurion Arms. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Designed to fit Carbines with: MIL-SPEC Barrel Nut, Delta Ring, and front. 00 $320. We offer a variety of lengths, materials and. View Profile View Forum Posts View Articles Industry Professional Join Date Jun 2006 Posts 12,742 Feedback Score 1 (100%) Originally Posted by Eurodriver. titsonritz. Description. 56 Forged Lower Receiver . Description Centurion Arms LLC is happy to announce the C4 MLOK® rail. NEW Centurion Arms C4 m-lok rail. Features: Height: 2. Picked up this upper from BCM to be delivered this week…The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. I really like how slim the design is and how comfortable it is to get a good grip regardless of your preferred shooting style. In Stock C4 M-LOK Rail (Mid Cut) $320. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 00 (Intro Price $238. This is my official fan page; if you know me personally, please refrain from using my name here, thank you - StickmanNEW Centurion Arms C4 m-lok rail; If this is your first visit, be sure to check out the FAQ by clicking the link above. It would obviously need to be longer than 12". So my question is, what is the best free float rail, preferable mlok for a 14. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Let's Go Brandon! Thanks for the pics. A. 95. It feels very slim in my hand, very solid. Thread: NEW Centurion Arms C4 m-lok rail. It is a lightweight, rugged, 2-piece free float rail that when installed gives the. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. An M-LOK Rail System looks like a long tube that has sections cut out along the entire length of the piece and all around the piece, which allows for M-LOK accessories be mounted to many different parts of the system. 95: JPROS: 45° Rail Offset Adapter: $62. It was designed with the top 1913 rail for mounting the most common accessories, yet does away with the need for 1913 rail at the 3, 6, and 9 o'clock positions. 95 $115. 26 (100%) Originally Posted by abso. 24 models Aero Precision AR15 Atlas S-One M-LOK Handguard (86) As Low As (Save Up to 22%) $133. C4 MLOK 12in FSP (For Carbine Gas FSB's) The MLOK C4 rail system is based off the patented quad rail version. Last edited by titsonritz; 01-23-20. 00) Pre-Order, Shipping by Mid-March; C4 M-LOK Rail (12in) – $310. The centurion is a solid little rail from my experience. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Cut Top Rail, M-LOK, Black, 9in - $54. The MLOK C4 rail system is based off the patented quad rail version. They come in a variety of options such as their WML White with 400 lumens at 1. Centurion Arms C4 M-Lok Handguard - Carbine Pocket 12" $332. In Stock. I have also done work for 200 or so manufacturers within the firearm community. This design allows the installation of the. Save 5% MSRP: $ 280. Rail for hbpw carbine. Carbine. This one, not the extended length…TRYBE Defense AR-15 M-LOK 9in Extra Lightweight Handguard w/ Cut-Away Rail, Flat Dark Earth, 9 Inch, HDG9CR-FDE (46) $114. This design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices. Shop Mission First Tactical EXD Free Float M-LOK Rail System | Up to 16% Off Be The First To Review Mission First Tactical EXD Free Float M-LOK Rail System + Free Shipping over $49. BCM® MCMR-7 (M-LOK® Compatible* Modular Rail) Flat Dark Earth. Great quality and lightweight handguards. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It measures 9. $325. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12 o’clock rail and M-LOK® slots for the 3, 6, and 9 o’clock positions. 6618 posts · Joined 2005. In Stock. AIM Sports M4 Handguard Quad Rail, Carbine Length (81) $39. Comes with centurion barrel nut and all the screws for mounting. I am not really liking it. MSRP: $245. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Most time consuming part was removing the delta ring, hand guard retaining clip, and cutting off the sling tabs, smoothing them out and re-bluing them. Just Right Carbine Gen 3 – Best Glock Mag 9mm Carbine. $225 shipped. Back Order. The M-LOK® C4 rail system is based off the patented quad rail version. The Centurion patented C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. Rating: 100%. Accessories are mounted directly to the front face of the slots using a cammed T-nut. Drop-In M-LOK Handguard with integrated QD Sling Attachment The Tekko Polymer AR15 Carbine M-LOK™ Rail System replaces the plastic factory handguard in minutes and requires no gunsmithing. We have M-LOK, Quad rail, Keymod Handguards, they only cost a fraction of what you would buy a big brand handguard. Includes BCM M-LOK Compatible Sling Mount, (FREE for a limited time) 1. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. 5" Lightweight M-LOK Upper without BCG and CH. 5in - 15in) $225. The Centurion Arms C4 Rail fits securely onto a standard barrel nut, allowing for easy installation without the need to remove the front sight post or permanently attached muzzle devices. The 2-piece design allows for installation to a standard barrel nut without removal of the muzzle device or front sight post. It also gives you the most length for hand placement or area to mount things like Angled Forward Grips, hand stops, keymod or m-lok accessories and the like. . Show 40 post(s) from this thread on one page. 00) Pre-Order, Shipping by Mid-March C4 M-LOK Rail (12in) - $310. VISM AR15 M-Lok Handguard/ Two Piece/ Drop In Fit/ Carbine Extended Handguard Length/ 13. 5" in FDE. The Centurion Arms C4 Rail Lightweight Handguard provides a continuous 1913 rail at 12 o'clock. C4 MLOK 12in FSP (For Carbine Gas FSB’s) The MLOK C4 rail system is based off the patented quad rail version. Centurion Arms. I'm looking for a two piece keymod/m-lok handguard (preferably keymod since I have a 2 keymod rails already). Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. 00 Your Price: $19. Material: 6061 T6. The traditional rifle ergonomics was a bit of a breath of fresh air amidst a cacophony of AR-style 9mm pistols. 00 (Intro Price $263. In Stock. [PARTS] Centurion c4 mid-length quad rail cutout. 50 Off on Centurion Arms C4 Rail Handguard-0609-MC, 0609-CC with 4. . This strong and lightweight 2-piece design can be installed easily onto standard AR-15 uppers after removing the delta ring and hand guard cap, a task easily accomplished with hand tools. Next Page. Finish: type 3 hard coat anodized. 99 $84. Save 23 – 27% MSRP: $ 109. 00. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12 o’clock rail and M-LOK® slots for the 3, 6, and 9 o’clock positions. The Centurion patented C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. 95 to $350 depending on model and finish. C4 MLOK 12in FSP (For Carbine Gas FSB's) The MLOK C4 rail system is based off the patented quad rail version. The C4 carbine cutout model is Centurion Arms #2 seller. PSA PX9 – Best Custom 9mm Carbine. I have also done work for 200 or so manufacturers within the firearm community. Turns out I dont care for fixed iron sights. In fact, Monty had installed one his M4A1 carbine he carried as an operator, his C4 carbine front cut C4 rail. 50) Available. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. It's designed to enhance your AR15, M4, and M16 type weapons systems, with precision, stability, and balance. BCM® PMCR (Polymer M-LOK® Compatible Rail)* Mid Length-BLACK (COSMETIC BLEM) MSRP: $40. 99 (Save 25%) $29. In Stock. 97. I will be using a 14. When I purchased the rifle it came with the B5 Systems mid-length M-LOK handguard. 50) Available NOW C4 M-LOK Rail (Mid Cut) - $320. The Magpul SL has just enough clearance for a bayonet to be mounted. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. 5” choice. C4 M-LOK CARBINE CUT. These Inforce lights are slimline designs made originally for rifles, but they work great as a tactical helmet light as well. micmac Replies: 0 Views: 60 6/11/2023 4:32 AM. Also, it is a strong design -- the C4. Stickman. 20. 2 models Geissele 13. Gun Rail: M-LOK Weight: 12. C4 M-LOK Rail (Carbine Cut) $280. This design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. NEW Centurion Arms C4 m-lok rail. Firearm Discussion and Resources from AR-15, AK-47, Handguns and more! Buy, Sell, and Trade your Firearms and Gear. Down to 2 now, but given the choice between the. Lasers work like optics and must be zeroed to be effective. Features. The Daniel Defense Omega M-LOK 2-pc free-float handguard is not a drop-in. Pensacola, FL - collector, shooter, and enthusiast. 1 In Stock. Cause I want a factory built upper with the carbine cut out. Cut the delta ring assembly and handguard cap off and bolt the handguard on. 18 shipped with code February. In Stock. Daniel Defense DD RIS III M-LOK Rail FSP in FDE $486. One thing to consider if you decide to go with a completely new rail is that you will need a new crush washer, a new lo-pro gas block and possibly a new gas tube. Mission First Tactical Tekko Metal AR Carbine 7in Drop In Rail System, AR-15, M-LOK, 7 in, Black, TMARCMRS, MPN:. 2 Star Rating Free 2 Day Shipping. My personal favorite is the carbine cut which gives you a 12-inch rail with a cut designed to work with front. are needlessly heavy. For a great example of a One-Piece M-LOK Handguard, check out the Dirty Bird AR-15 SMRS Handguard- Slim M-LOK System. UPC: MPN: AR15Discounts 706 2 months ago. The machine work and fit & finish is typical Centurion quality. Right now, the Fortis rail looks intriguing, but I also see Centurion makes a standard barrel nut rail. 00 Your Price: $171. In Stock. 7 Star Rating on 148 Reviews for VISM AR15 M-LOK Carbine Handguard Best Rated + Free Shipping over $49. This design allows the installation of the rail on an upper assembly without removing the front sight post or permanently attached muzzle devices. In fact, Monty had installed one his M4A1 carbine he carried as an operator, his C4 carbine front cut C4 rail. 00 $200. Fortis Night Rail™ 556mm Free Float Rail System – M-LOK for AR 15. The Centurion patented C4 rail system is a lightweight, rugged, 2 piece free float rail that when installed gives the uppers a continuous 12o'clock rail. M-LOK Series Hand Guard Length: Carbine. 95 – $ 185. UPC: 848754011060. In Stock. View Profile View Forum Posts View Articles Industry Professional Join Date Jun 2006 Posts 12,688. 00. Win a FREE Membership! Sign up for the ARFCOM weekly newsletter and be entered to win a free ARFCOM membership. dms16 Replies: 0 Views: 404 6/10/2023 9:37 PM AR parts. But HOW do you do it? How exactly do you use M-LOK's c. The C4 system is the lightest and most rigid rail that clamps to a standard barrel nut on all AR15, M4, and M16 type weapons systems. ProvenArmsOutfitters. The MLOK C4 rail system is based off the patented quad rail version. Add to Wish List Add to Compare. Features. It is a lightweight, rugged, 2-piece free float rail that when installed gives the uppers a continuous 12o'clock rail and MLOK slots for the 3,6, and 9 o'clock positions. Cause I want a factory built upper with the carbine cut out. 00 $ 266. - Complete install in minutes, removal of delta ring is required.