Davidson Defense Cold Snap 7.5-inch Pistol-Gas 1:7 5.56 NATO AR-15 Freefloat M-Lok Handguard Pistol Upper Build Kit

Cold Snap 7.5 Inch 5.56 NATO AR-15 Pistol Upper Build Kit with M-LOK Handguard

7.5 inch 4150 Chrome Moly Vanadium barrel in 5.56 NATO with 1:7 twist rate, contour profile, manganese phosphate finish, pistol length gas system, micro low profile steel gas block, 7075-T6 aluminum upper receiver with M4 feed ramps and anodized finish, 7 inch freefloat M-LOK handguard, and GI birdcage flash hider. This pistol upper build kit delivers ultra-compact AR-15 performance in a streamlined package.

Key Features

• 7.5 inch 5.56 NATO barrel made from 4150 Chrome Moly Vanadium with contour profile, manganese phosphate finish, and 1:7 twist rate stabilizing bullets from 55 to 77 grains
• Pistol length gas system provides reliable cycling with the shortest standard gas tube length, optimized for barrels under 10 inches
• Micro low profile steel gas block sits flush under the handguard with minimal height and maintains gas seal integrity
• 7075-T6 aluminum upper receiver with M4 feed ramps and anodized finish provides reliable feeding and corrosion resistance
• 7 inch freefloat M-LOK handguard allows M-LOK accessory mounting while covering most of the barrel length for a clean appearance
• 1/2x28 threaded muzzle with manganese phosphate finished GI birdcage flash hider compatible with 5.56 NATO suppressors and muzzle devices

Perfect For

• Ultra-compact builds prioritizing maximum maneuverability in confined spaces
• Backpack or vehicle carry where every inch of length matters
• Shooters wanting the shortest legal AR-15 configuration without NFA registration
• Home defense applications in tight quarters where barrel length improves handling

7.5 Inch Pistol Length Configuration

The 7.5 inch barrel length creates an ultra-compact package with significantly reduced overall length compared to standard carbine configurations. The 1:7 twist rate stabilizes heavier 5.56 NATO bullets in the 62 to 77 grain range, though velocities will be substantially reduced compared to longer barrels. The contour profile tapers from chamber to muzzle, balancing weight distribution while maintaining structural integrity. The manganese phosphate finish protects against corrosion and provides a durable non-reflective surface. The pistol length gas system uses the shortest standard gas tube length, positioning the gas port closer to the chamber to ensure adequate gas pressure for reliable cycling with the limited barrel length. The micro low profile steel gas block is constructed from steel rather than aluminum, providing increased durability and maintaining gas seal integrity over extended use. The .750 gas block journal provides compatibility with adjustable gas blocks if you want to fine tune gas flow for suppressed use. Expect significant muzzle flash and concussion with this barrel length, particularly with standard ammunition.

7 Inch M-LOK Handguard and Upper Receiver

The 7 inch freefloat M-LOK handguard extends nearly to the muzzle device on the 7.5 inch barrel, maximizing accessory mounting space while maintaining the compact profile. The M-LOK slots on the sides and bottom allow direct attachment of lights, grips, and other accessories using M-LOK compatible mounts. The freefloat design means the handguard does not contact the barrel, eliminating pressure points that can shift point of impact as the barrel heats. The 7075-T6 aluminum upper receiver features M4 feed ramps machined into the barrel extension interface, improving feeding reliability with a wide range of bullet profiles and magazine types. The anodized finish provides corrosion resistance and matches the handguard for a cohesive appearance.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. BCG and charging handle are not included.