Adams Arms 12.5" Adjustable P Series Evo Upper 300BLK AR-15 AR15 Pistol Piston
This new 12.5" 300 Blackout Upper was added to our piston driven lineup as the next generation of short-barreled options, ideal for close quarters shooting where a more compact platform is desired. THIS IS THE UPPER ONLY, COMPLETE PISTOL LOWER SHOWN FOR EXAMPLE PURPOSE ONLY. EASILY BUILD AS A PISTOL OR OBTAIN SBR LICENSE AND THEN BUILD AS A RIFLE.
This Upper Includes:
- Mil-Spec Forged7075-T6 M-4 Upper Receiver, Type III Class II Hard-coat anodized finish, M4 feed ramps, 1913 Picatinny rail flat top with dry lube internal finish and laser engraved T-markings
- M16 Piston Bolt Carrier Group BCG, Charging Handle
- 12.5" Medium Contour 4150 CM Melonited Barrel 1:9.5 twist
- Chambered 300BLK
- VDI .30 Cal Jet Comp
- Samson free float light weight modular rail system
- 5 Position Adjustable Latest P series for 300BLK Low Profile Gas Block (5 settings: 100%/75%/50%/25%/OFF)
- Weight (as configured): 4.25 lbs
Upper Receiver: A4 Flat-Top, Forged
Barrel Length: 12.5"
Barrel Contour: Medium
Barrel Material: 4150 Chrome Moly Vanadium Steel
Muzzle Thread Pattern: 5/8"-24
Chrome Lined: No
Barrel Finish: QPQ Melonite / Black Nitride
Twist Rate: 1 in 9.5"
M4 Feed Ramps: Yes
Bolt Carrier: 1-Piece w/Integral Piston Strike Face
Muzzle Device: VDI .30 Cal Jet Comp
Gas System Length: Pistol, Short Stroke Piston Operated
Gas Block Diameter: 0.750"
Handguard: 12" Evolution Rail
Weight: 4.25 lbs