The Steiner 14.5-inch Mid-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit provides gunsmiths with a robust and reliable solution for crafting a high-performance AR-15 pistol. Featuring a 14.5-inch chrome-lined barrel made from 4140R steel with a medium profile, this kit is engineered for optimal accuracy with a 1:7 twist rate, making it suitable for various projectile weights. The mid-length gas system ensures smooth cycling, partnered with a micro low-profile gas block for .750 O.D. barrels.
The included Fortis 12.9-inch M-LOK handguard, constructed from aircraft-grade aluminum and finished with anodized black, provides a lightweight and durable platform for accessory attachment while maintaining heat dissipation. Each upper includes an A2 extended flash hider to minimize muzzle flash. Designed for compatibility with standard AR-15 components, this build kit is pin and weld ready, catering to the needs of firearms enthusiasts committed to performance and freedom.
Caliber: 5.56x45mm NATO
Barrel: 14.5" 5.56 NATO AR-15 Barrel, Chrome Lined
Barrel Length: 14.5-inch
Barrel Material: 4140R Steel
Barrel Twist Rate: 1:7
Barrel Finish: Phosphate
Barrel Profile: Medium
Barrel Thread Pitch: 1/2x28
Barrel Gas System: Mid-Length
Gas Block Size: 0.750
Gas Block: Micro Low-Profile
Handguard: Fortis AR-15 12.9" M-LOK Night Rail Handguard
Handguard Length: 12.9-inch
Handguard Material: Aircraft-Grade Aluminum
Handguard Color: Black
Handguard Finish: Anodized
Handguard Style: Free Float
Muzzle Device: A2 Extended Flash Hider
Muzzle Thread Pitch: 1/2x28
Muzzle Device Finish: Phosphate
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