Dark mode is

Brace Built Modern Carbine MC6 5.56 NATO Rifle - 16"

AR-15 Rifle

As low as: $1399.99
Out of stock

This product ships from another warehouse location and not available at our retail store. Orders will take an additional 1-2 business days for processing.

Brace Built Modern Carbine 6

The MC6 is proof that you can build a lightweight, sub-MOA AR-15 in 5.56mm that is still reliable, durable, and has all of the accents and styling you expect from a premium firearm. Currently in use at over 80 police departments in the USA and with over 3,000 discerning customers, the MC6 combines only the best components including an upper receiver, lower receiver, and proprietary, slimline, MLOK™ compatible hand guard machined in house from billet, high performance barrels, and specially selected components. Comes standard with a SilencerCo™ ASR flash hider, 16” barrel, and Cerakoted from the factory (upper, lower and hand guard) in flat black.


  • Mag Well: Wire EDM flared magazine well with accents.
  • Gas System: Pinned low profile gas block, mid length melonited gas tube, gas key with rounded leading edges ensuring positive functioning in all makes and grades of uppers and buffer tube combinations.
  • Bolt Carrier Group: Azimuth™ Bolt Carrier Group and bolt. Rounded cam pin rides in a fully chamfered cam path. Properly staked and torqued grade 8 hex screws as per the true Mil-Spec. Carrier body OD and ID are hard turned after heat treat to +/- .0005 inches. Bolt lugs are machined with the proper radius as per true Mil-Spec tolerances. Independent HP white proof testing exceeded over 90,000 PSI without failure. Outer diameter machined to all critical surfaces within +/- .0005 inches. QPQ Melonite Finish.
  • Charging Handle: Radian™ Ambidextrous Raptor – LT
  • Safety: Ambidextrous Radian Talon
  • Bolt Catch: Seekins™ Enhanced
  • Mag Release: Seekins Billet
  • Buffer tube: Maritime™
  • Buffer: H2 Buffer
  • Stock: MagPul™ MOE® SL-K™Carbine Stock
  • Grip: MagPul MOE® Grip
  • Receivers: Lightweight, custom matched billet upper and lower receivers, monolithic top rail
  • Caliber: 5.56mm
  • Trigger: Timney™ Competition Trigger
  • Barrel: 16”  5.56mm barrel 1:7 twist (machined from 4150 Chrome Moly Vanadium Steel and feature a QPQ Corrosion Resistant Finish and Nickel Boron Coated M4 Feed Ramp Extension.
  • Handguard: 13” low profile Modern Carbine™ monolithic free float M-LOK® handguard with proprietary barrel nut
  • Muzzle Device: SilencerCo™ ASR muzzle brake
  • Recommended match ammunition by caliber for sub MOA capability: Hornady™ 223 73gr ELD Match 80269
  • Weight: 5.2 lbs
  • Includes: (1) 30rd Magpul PMAG

FFL Required Before Shipping.
Please have your dealer email a copy of their FFL to [email protected] or fax it to 253-218-2998, referencing your name and order number.

More Information
SKU A-MC6-R-1-16-556-DS
Product Type AR-15 Rifle
Manufacturer Brace Built
Rail Length 13"
Barrel Length 16"
Caliber 5.56
Configuration 1/2X28 Thread