The Show Stopper 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit from Davidson Defense offers a robust solution for serious gunsmiths. It features a "Satellite" 16.5-inch QPQ Nitride medium profile barrel made from 4150 Chrome Moly Vanadium steel, with a 1:7 twist rate and mid-length gas system for reliable operation. The upper receiver is constructed from 7075 T6 aluminum, anodized for durability, and includes M4 feed ramps for optimal reliability.
A 15-inch M-LOK handguard with a partial Picatinny rail allows for versatile accessory mounting while maintaining a lightweight profile. The included Breek Arms Plan B Sentinel Caged Flash Hider, made from 4140 hardened steel and finished in Nitride, reduces muzzle signature without sacrificing performance. This build kit represents a complete upgrade solution for the AR-15 platform, catering to those who value precision and functionality.
Product: Show Stopper 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit, Plan B Sentinel Caged Flash Hider
Barrel: "Satellite" 5.56x45mm 16.5" QPQ Nitride Medium Profile AR-15 Barrel
Caliber: 5.56x45mm NATO
Barrel Length: 16.5-inch
Twist Rate: 1:7
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: QPQ Nitride
Barrel Profile: Medium
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Mid-Length
Gas Block Size: 0.75
Gas Block: Micro Low-Profile Gas Block, .750 O.D Barrel Steel
Upper Receiver: AR-15 Upper Receiver, M4 Feed ramps
Upper Receiver Material: 7075 T6 Aluminum
Upper Receiver Finish: Anodized
Handguard: MLOK AR-15 Handguard W/ Partial Picatinny Rail, Integrated Handstop, Anti-Rotation Tabs, Trapezoid Cuts
Handguard Length: 15-inch
Handguard Style: M-Lok
Handguard Color: Black
Muzzle Device: Breek Arms Plan B Sentinel Caged Flash Hider
Muzzle Thread Pitch: 1/2x28
Muzzle Device Material: 4140 hardened steel
Muzzle Device Finish: Nitride
Muzzle Device Design: Closed-tine, fully shrouded (caged) for superior flash suppression
Gas Tube Length: Mid-Length
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