Adams Arms 12.5 P Upper 300BLK AR15 Pistol Piston 300 blackout

Adams Arms 12.5 P Upper 300BLK AR15 Pistol Piston 300 blackout

Model:  UA-12.5-P-EVO-XLP-300BLK



Manufacturer:  Adams Arms

Availability : In-Stock

Available Options:
Kit Options: Basic Kit  
Upgrade to Nickel Boron Carrier ( + $10.00 )
Upgrade to Low Mass Carrier ( + $29.95 )
Upgrade to Low Mass Nickel Boron Carrier ( + $35.95 )


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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


Complete Specifications:

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"

Chamber: 300BLK

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

Sights: None

Weight: 4.25 lbs


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