Items Available For Purchase Today Object reference not set to an instance of an object. See All AR-15 AR15 AR 15 M4 5.56 16" 1X7 Chrome Moly Vanadium For Sale from: All Weapons One ( FFL) | No feedback Yet View | Verified Seller View Sellers Items AR-15 AR15 AR 15 M4 5.56 16" 1X7 Chrome Moly Vanadium For Sale from: All Weapons One | No feedback Yet View | Verified Seller View Sellers Items All Weapons One Seller Since: Oct. 2012 Identity Verified ( Brule, WI ) This seller is an FFL City: Brule State: WI SOLD - $85.00 Shipping: $11.00 (or Arrange local transfer) Accepted Payment Methods: Returns: No Returns Description: M4 Feed Ramp Barrel Extension Mil-Spec M4 feed ramp modifications were performed to enhance the reliability of the shorter 16" barreled carbines. 1/7 Twist Rate This twist rate has proven very versatile and can effectively run the full range of 5.56/.223 ammo including new heavier 5.56 ammo that is hugely popular with military and private security personal for its’ superior ballistics. Mil-Spec Barrel Steel (Mil-B-11595E) This grade (CMV) 4150 chrome-molly vanadium steel; it is stronger and will last longer than the typical barrels offered in the commercial market. The Mil-Spec grade steel gets its’ additional strength and rigidity from an increase in carbon and/or vanadium in the alloy. This will offer increased barrel life and performance through use in all types of extreme environments and temperatures. Manganese Phosphate Barrel Finish (Mil-Spec A-A-59267) Barrels are manganese phosphate finished. Military specifications also state that the entire barrel surface is phosphate finished to create a porous surface to absorb oil as to resist against corrosion from the elements. 5.56 NATO Chambers The 5.56 NATO chamber is the best choice for effective deployment, reliability, and compatibility, of higher chamber pressures of military ammo. The 5.56 chamber will accept 5.56 or .223 ammo. M4 Government Barrel Profile The M4 government profile barrel is compatible with the current M203 mounting systems. Condition: New In Box Brand: All Weapons One AWO Item #: 909043412 Location: WI Trades Accepted: Qty: 14 Available Share: Shipping Notes: See Description ALL WEAPONS ONE LLCFIREARMS MANUFACTURERDURACOATCERAKOTEAR-15 PARTS AND SUPPLIES Items You've Viewed Recently AR-15 AR15 AR 15 M4 5.56 16" 1X7 Chrome ... $85.00 SELLER: All Weapons One (FFL Dealer) Add To Cart