Technical Information

Upper Receiver: A3 Flat-Top

Barrel Length: 20"

Barrel Contour: Bull

Barrel Material: 416 Stainless Steel

Muzzle Thread Pattern: None, Target Crown

Chrome Lined: No

Barrel Finish: Polished

Twist Rate: 1 in 9"

Chamber: 223 Remington

M4 Feed Ramps: Yes

Muzzle Device: N/A

Gas Block Diameter: 0.936"

Gas System Length: Rifle

Handguard: 1-Piece Aluminum, Free Float

Sights: None

Bolt Carrier Assembly Included: Yes

Bolt Carrier Type: Commercial

Extras: Single Rail Gas Block

NOTE:

This DPMS AR-15 A3 Bull Barrel Upper Receiver Assembly comes fully assembled and ready to install on any standard small pin, mil-spec lower receiver. The versatile A3 Upper configuration is constructed of Forged 7075 T6 Aircraft Grade Aluminum, and features a Picatinny Top Rail for ease of mounting optics. The 20" Stainless Steel Bull Barrel sports a well-executed target crown for superior accuracy, while its additional length and heavier contour moves extra weight to the front end of the rifle for faster shot-to-shot recovery, decreased perceived recoil and less muzzle flip.This upper is chambered for 223 Remington, and uses 1 in 9" Twist Rifling that is ideal for use with light- to medium-weight projectiles of up to about 69 grains. A Rifle Length Free Floating Aluminum Handguard rounds out the package and further aids to enhance accuracy potential by removing all shooter-induced pressure from the barrel. Comes complete with a single rail gas block, commercial bolt carrier assembly, charging handle, forward assist, ejection port door and shell deflector.All DPMS upper receivers are factory test fired for functionality before shipment.