Details
Warden 14.5-Inch 5.56 NATO AR-15 Pistol Full Build Kit, SBR Ready
This SBR Ready full build kit combines a 14.5-inch 4150 CrMoV barrel with a freefloat Keymod handguard, chambered in 5.56 NATO. The kit includes an anodized 7075-T6 aluminum upper receiver with M4 feed ramps, micro low-profile gas block, carbine-length gas system, A2 birdcage flash hider, mil-spec charging handle, 5.56x45mm QPQ nitride bolt carrier group, mil-spec heavy-duty 6-position buffer tube, buffer, carbine recoil spring, castle nut, end plate, and complete mil-spec lower parts kit. Ships without a brace. Lower receiver not included.
Key Features
- SBR Ready configuration, ships without a brace
- 14.5-inch M4 profile barrel, 4150 CrMoV steel with phosphate finish, 1:7 twist rate
- Freefloat Keymod handguard, 6061-T6 aluminum, black
- Anodized AR-15 upper receiver with M4 feed ramps, 7075-T6 aluminum
- Carbine-length gas system with .750 micro low-profile gas block
- AR-15 5.56x45mm QPQ nitride bolt carrier group, 9310 alloy steel bolt head, 8620 alloy steel body
- Mil-spec heavy-duty 6-position buffer tube with buffer, carbine recoil spring, castle nut, and end plate
- 1/2x28 threaded barrel with manganese phosphate A2 birdcage flash hider
- Standard AR-15 M4 charging handle
- Complete mil-spec AR-15 lower parts kit
Perfect For
- SBR builds requiring complete component sets without a brace
- Shooters selecting their own brace or stock configuration
- Builders seeking 14.5-inch M4 profile barrels with 5.56 NATO chambering
- Configurations demanding freefloat Keymod handguards with complete lower parts
SBR Ready Configuration
This kit ships without a brace, intended for customers selecting their own final setup. The included mil-spec heavy-duty 6-position buffer tube, buffer, carbine recoil spring, castle nut, and end plate accommodate brace or stock attachment based on your chosen configuration.
5.56 NATO Chambering
5.56 NATO chambering provides compatibility with both 5.56 NATO and .223 Remington ammunition. The 1:7 twist rate stabilizes a wide range of bullet weights including heavier projectiles up to 77 grains.
QPQ Nitride Bolt Carrier Group
The 5.56x45mm bolt carrier group features QPQ nitride finish over 9310 alloy steel bolt head and 8620 alloy steel body. The nitride treatment provides corrosion resistance and surface hardness while reducing friction.
Carbine-Length Gas System
This kit uses a carbine-length gas system with a stainless gas tube and .750 micro low-profile gas block positioned beneath the handguard. The carbine-length configuration is optimized for the 14.5-inch barrel length.
Compatibility and Assembly
This full build kit is compatible with mil-spec AR-15 lower receivers. All components use standard AR-15 specifications and threading, including the 1/2x28 TPI muzzle threads matching the included A2 birdcage flash hider.
Ships without a brace. Do not install a stock unless compliant with applicable laws. Lower receiver not included. Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws.
