Product Description
MCS AR-15 7.5" .300 BLACKOUT PISTOL UPPER HEAVY BARREL 7" SMOOTH TUBE HANDGUARD
This is a complete AR-15 upper assembly built for .300 Blackout pistol configurations. The 7.5-inch 4150 CrMoV barrel uses a 1:8 twist rate optimized for subsonic and supersonic ammunition, while the free-float handguard isolates barrel movement for consistent accuracy. The pistol-length gas system cycles reliably in short-barreled setups, and the low-profile gas block keeps the top rail clear for optics mounting.
Product: .300 Blackout Pistol Upper
Platform: AR-15
Caliber: .300 Blackout
Color: Black
Barrel Length: 7.5-inch
Barrel Material: 4150 CrMoV
Barrel Finish: Phosphate
Barrel Profile: HBAR
Barrel Twist Rate: 1:8
Barrel Thread Pitch: 5/8x24
Upper Receiver Material: 7075-T6 Aluminum
Upper Receiver Finish: Anodized
Feed Ramp Style: M4
Gas Tube: Pistol Length Gas Tube (Qty 1)
Gas Block Size: 0.750
Gas Block Style: Low-Profile
Handguard Length: 7-inch
Handguard Material: 6061-T6 Aluminum
Handguard Style: Free Float Smooth Tubular
Muzzle Device: AR-15/AR-10 .308 5/8x24 TPI GI Birdcage Flash Hider (Qty 1)
Component: 5/8" Crush Washer - Black (Qty 1)
