U.S. Rifle Ban-Compliant MK 15 Upper Receiver, Complete
- .223 Wylde 16″ 4140 mid-length barrel w Mil-Spec 86L20 case hardened M4 extension and target crown – no muzzle threads.
- 1/8 twist, Mid length gas port, .750 gas block seat and QPQ Nitrided.
- Samson Mfg. .750 gas block, mounting hardware staked for reliability
- Mil-Std upper receiver with Strike Ind polymer ejection port door and USGI charging handle
- MPI nitride Bolt Carrier group, properly staked
- Samson Mfg. M-LOK 15″ handguard
- Function fired and carries US Rifle’s 1 MOA accuracy guarantee
- 100% Made in America