The Show Stopper 16.5-inch AR-15 5.56 NATO Rifle Upper Build Kit from Davidson Defense provides a solid foundation for your tactical assembly needs. This kit features a "Satellite" 16.5-inch QPQ Nitride medium profile barrel, crafted from 4150 Chrome Moly Vanadium, with a twist rate of 1:7. The barrel is complemented by a mid-length gas system and a micro low-profile gas block.
The upper receiver is made from 7075 T6 aluminum, finished with anodizing for durability and compatibility with M4 feed ramps. Additionally, the kit includes a 15-inch M-LOK handguard with an integrated handstop for modular accessory attachment. The Breek Arms Plan B Scorch 3-prong flash hider, made from 4140 hardened steel and finished with nitride, effectively reduces muzzle flash for improved tactical performance. This upper build kit is designed for gunsmiths who value precision and functionality in the AR-15 platform.
Caliber: 5.56x45mm NATO
Barrel: "Satellite" 5.56x45mm 16.5" QPQ Nitride Medium Profile AR-15 Barrel
Barrel Length: 16.5 inches
Barrel Material: 4150 Chrome Moly Vanadium
Barrel Finish: Nitride
Barrel Profile: Medium
Barrel Twist Rate: 1:7
Barrel Thread Pitch: 1/2x28
Barrel Gas System Length: Mid-Length
Gas Block: Micro Low-Profile Gas Block, .750 O.D Barrel Steel
Gas Block Size: 0.75 inches
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
Handguard Style: M-Lok
Handguard Length: 15 inches
Muzzle Device: Breek Arms Plan B Scorch 3-Prong Flash Hider
Muzzle Thread Pitch: 1/2x28
Muzzle Material: 4140 hardened steel
Muzzle Finish: Nitride
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