The Steiner 14.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Complete Upper is engineered for reliability and performance. It features a 14.5-inch barrel constructed from 4140 gun steel with a phosphate finish and a medium profile. The 1:7 twist rate optimizes projectile stability, making it suitable for various ammunition types. This upper assembly includes a mid-length gas system, paired with a micro low-profile gas block for efficient operation.
The handguard, measuring 12.9 inches, is made from aircraft-grade aluminum and employs a free-floating design, offering a lightweight and robust solution for mounting accessories via M-Lok attachment points. The upper receiver is black anodized with a dished Picatinny rail and a forward assist. It includes a Breek Arms Warhammer MOD2 MICRO Ambi Charging Handle and an A2 Extended Flash Hider that is pre-drilled for pin and weld, ensuring compliance with firearm regulations.
Caliber: 5.56x45mm NATO
Barrel Length: 14.5 inches
Barrel Material: 4140 Gun Steel
Barrel Finish: Phosphate
Barrel Profile: Medium
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Gas System: Mid-Length
Gas Block Size: 0.750 inches
Upper Receiver: AR-15 Upper Receiver w/ Dished Pic Rail and Forward Assist, Black Anodize
Upper Receiver Finish: Black Anodized
Handguard Material: Aircraft-Grade Aluminum
Handguard Length: 12.9 inches
Handguard Color: Black
Handguard Style: Free Float
Attachment System: M-LOK
Charging Handle: Breek Arms Warhammer MOD2 MICRO Ambi Charging Handle, Black
Bolt Carrier Material: 8620 Steel
Bolt Carrier Finish: Chrome Lined, Phosphate Coated
Gas Block: Micro Low-Profile
Muzzle Device: A2 Extended Flash Hider, 1/2x28, Pre-drilled hole for pin and weld
Muzzle Thread Pitch: 1/2x28
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