Details
Cold Snap 7.5 Inch 5.56 NATO AR-15 Pistol Full Build Kit with SB Tactical SBA3 Brace
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, 7075-T6 aluminum upper receiver with M4 feed ramps and anodized finish, 7 inch freefloat M-LOK handguard, nitride finished bolt carrier group with 9310 steel bolt and 8620 steel carrier, mil-spec charging handle, pistol buffer tube, carbine buffer and spring, SB Tactical SBA3 adjustable pistol stabilizing brace, and GI birdcage flash hider. This pistol full build kit delivers ultra-compact AR-15 performance with all major components needed except the lower receiver.
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
- 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
- Nitride finished bolt carrier group with 9310 steel bolt and 8620 steel carrier provides enhanced surface hardness and corrosion resistance
- SB Tactical SBA3 adjustable pistol stabilizing brace with multiple position adjustment and minimalist design
- Complete buffer system includes pistol buffer tube, carbine buffer, spring, castle nut, and end plate
- 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. 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.
SB Tactical SBA3 Pistol Stabilizing Brace
The SB Tactical SBA3 is an adjustable pistol stabilizing brace with a minimalist split design that reduces weight while maintaining structural integrity. The brace adjusts across five positions on the pistol buffer tube for different length of pull settings, allowing customization for different shooting scenarios and user preferences. The polymer construction provides a contact surface for stabilizing the firearm while keeping overall weight down. The SBA3 has become one of the most popular pistol braces due to its balance of adjustability, low weight, and secure lockup at each position. The brace attaches to the included pistol buffer tube.
Nitride Bolt Carrier Group and Buffer System
The bolt carrier group features a 9310 steel bolt paired with an 8620 steel carrier, both finished with nitride coating across all surfaces. The nitride process diffuses nitrogen into the steel surface, creating a hardened layer that resists wear and reduces friction compared to traditional phosphate finishes. This means smoother cycling, easier cleaning, and longer component life. The mil-spec charging handle provides standard ergonomics and reliable operation. The complete buffer system includes the pistol buffer tube, carbine buffer, spring, castle nut, and end plate. The standard carbine buffer weight is appropriate for the pistol length gas system, providing reliable cycling while managing bolt carrier velocity.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Lower receiver not included.
