Davidson Defense Stackpoint 10.5-inch Carbine-Gas 1:8 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

5.56 NATO AR-15 Pistol Upper Build Kit | 10.5" Nitride Barrel | Davidson Defense Stackpoint | 1:8 Twist | M-Lok Handguard | Carbine Gas

Offering essential features for precision performance, this Davidson Defense Stackpoint 5.56 NATO pistol upper build kit delivers reliable function in a compact package. Constructed from durable 4150 CMV steel, the 10.5-inch government-profile barrel has a 1:8 twist rate and is finished with a nitride coating to ensure longevity and reliability. This upper utilizes a carbine gas system for optimized cycling, paired with a low-profile micro gas block sized at 0.750". The 7075-T6 aluminum upper receiver is anodized for enhanced durability and features M4 feed ramps for smooth feeding with various ammunition types. The M-Lok freefloat handguard allows for versatile accessory attachment, providing modular mounting options for lights, grips, and other attachments. It includes a compatible AR-15 1/2x28 TPI GI birdcage flash hider. This upper build kit is ideal for gunsmiths and builders seeking compact and efficient AR-15 components in the 5.56 NATO caliber.

Key Features

• 10.5" Nitride-Coated Barrel | 5.56 NATO Chambering – 4150 CMV steel with government profile and 1:8 twist rate
• Upper Build Kit – Includes all upper components for streamlined assembly
• 7075-T6 Aluminum Upper Receiver – Anodized finish with M4 feed ramps for smooth feeding
• M-Lok Freefloat Handguard – Versatile accessory attachment with modular mounting
• Carbine Gas System – Low-profile micro gas block (0.750") for optimized cycling
• AR-15 1/2x28 TPI GI Birdcage Flash Hider – Standard flash suppression for reduced muzzle signature
• Nitride Coating – Enhanced longevity and corrosion resistance
• Government Profile – Proven barrel contour for reliable performance

Perfect For

• Gunsmiths and builders seeking compact, efficient 5.56 NATO components
• Shooters looking for a maneuverable pistol upper platform
• Home defenders demanding stopping power in a compact package
• Range enthusiasts who value precision performance and versatility
• AR-15 owners seeking a quality pistol upper build kit

Nitride-Coated Barrel Performance

The 10.5-inch government-profile barrel constructed from 4150 CMV steel delivers reliable performance and proven durability. The government profile is a time-tested barrel contour that balances weight and rigidity for consistent accuracy. The nitride coating ensures longevity and corrosion resistance, providing superior surface hardness and enhanced wear protection compared to traditional finishes. With a 1:8 twist rate, this barrel is optimized for 5.56 NATO ammunition, stabilizing a wide range of bullet weights from lightweight 55-grain to heavier 77-grain projectiles for versatile performance across different ammunition types and applications.

M4 Feed Ramps and Enhanced Feeding

The 7075-T6 aluminum upper receiver is anodized for enhanced durability and corrosion resistance, providing long-term reliability even under demanding conditions. The inclusion of M4 feed ramps ensures smooth feeding with various 5.56 NATO and .223 Remington ammunition types and bullet profiles. This enhancement improves feeding reliability, particularly with modern ammunition designs and defensive loads. The forged aluminum construction provides exceptional strength and dimensional stability, ensuring proper alignment and consistent function throughout the life of the upper.

M-Lok Freefloat Handguard and Gas System

The M-Lok freefloat handguard allows for versatile accessory attachment, providing modular mounting options for lights, lasers, grips, and other attachments exactly where you need them. The M-Lok interface offers a slim profile while ensuring secure accessory mounting, and the freefloat design eliminates handguard contact with the barrel for improved accuracy and thermal management. The carbine gas system with low-profile micro gas block (0.750") provides optimized cycling for the 10.5-inch barrel length, ensuring reliable function with various 5.56 NATO ammunition types while maintaining a clean sight picture.

Compact and Efficient Upper Build

This upper build kit includes all upper components needed for a compact and efficient 5.56 NATO AR-15 pistol platform: upper receiver with M4 feed ramps, 10.5-inch nitride-coated barrel with government profile, M-Lok freefloat handguard, low-profile micro gas block, and AR-15 1/2x28 TPI GI birdcage flash hider for reduced muzzle signature. The combination of proven components, enhanced feeding reliability, and compact barrel length creates a maneuverable platform ideal for home defense, range use, and tactical applications. This kit is an excellent choice for gunsmiths and builders seeking precision performance and reliable function in a compact 5.56 NATO package.

Disclaimer: This is an upper build kit including all upper components except BCG and Charging Handle. Always follow safe handling practices and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws regarding pistol uppers and barrel lengths. Verify proper installation of all components including gas system and muzzle device before use. Use ammunition appropriate for 5.56 NATO or .223 Remington chambering.