The Sanders Armory AR-15 20″ 6MM ARC Type II Match Grade Stainless Steel 1:7.8 Twist 5R Tapered HBAR COMPLETE Upper Assembly with BCG and Charging Handle comes with a Match Grade barrel that has been hand lapped and air gauge tested with 5R rifling. M4 Barrel extensions with a Manufacturers Limited Lifetime warranty against manufacturers defects. It is equipped with a low profile Steel .750 Gas Block with Nitride Finish and a Stainless Steel Rifle Length Gas tube. The Free Float Ultra Slim Line KEYMOD or MLOK Handguard has a full line top rail. 6MM ARC (.136) Nitride BCG with Hardened Phosphate Extractor and Sanders Armory Standard Charging Handle. The upper receiver is a AR15 / M16 Mil Spec Upper Receiver with Spring Loaded Steel Dust Cover and Forward Assist. This AR15 Upper Receiver is forged from 7075-T6 aircraft aluminum, is precision machined to mil- spec M16/M4 specifications and features M4 feedramps, steel dust door and billet forward assist.
- AR-15 Mil Spec Upper Assembly with Spring Loaded Steel Dust Cover and Forward Assist
- 20″ 6MM ARC Type II Match Grade Stainless Steel Tapered HBAR Barrel WITH 5R Rifling
- Barrel is Air Gauge tested and Hand Lapped
- 1:8 Twist rate
- .750 Low Profile QPQ Steel Gas Block
- Rifle Length Stainless Steel Gas Tube
- 15″ OR 16.25″ Free Float Ultra Slim Line KEYMOD or MLOK Handguard
- Stainless Steel Tapered Fat Comp (5/8 x 24 Thread Pitch)
- 6MM Type 2 (.136) Nitride BCG with Hardened Phosphate Extractor
- Standard Charging Handle
- The complete upper fully assembled is 5.0 LBS
We do not ship to District of Columbia (Washington, D.C.); Massachusetts; Connecticut; Chicago, Cook County, Deerfield, Highland Park or Aurora Illinois; New Jersey; New York; Puerto Rico; Hawaii; or Canada. No international shipping, all must be within the 48 Contiguous United States. No APO/PPO/FPO’s.