The AR-STONER AR-15 Pistol A3 Upper Receiver Assembly 7.62x39mm 10.5" Barrel with 10" M-Lok Handguard has a 10.5" 4150 Parkerized Heavy Barrel, 1:10 twist rate with a 10 5/16" MLOK. This complete upper receiver is chambered in 7.62x39 and machined with 300 blackout feed ramps (both in the lower and barrel extension) and comes with a complete BCG and charging handle. This is the perfect upper for your next build.
Note: Flash hider may vary based on available inventory.
Product #: 503750 Manufacturer #: 331-UA762CHB10.5110P-10M3