Details
Warden 11.5-Inch Carbine-Gas 1:8 .223 Wylde AR-15 Free-Float KeyMod Handguard Pistol Full Build Kit with Magpul BTR Brace
The Warden Full Build Kit is built around an 11.5-inch KAK Industry .223 Wylde barrel machined from 4140 chrome moly vanadium steel in a government profile, with a carbine-length gas system and a Nitride finish. It is paired with a black free-float KeyMod handguard machined from 6061-T6 aluminum and a Magpul BTR pistol brace in black. The kit ships with a complete bolt carrier group and a mil-spec quality M4 charging handle. The short barrel keeps the front end compact and quick to handle, and the 1:8 twist suits a wide range of bullet weights in .223 Wylde. Lower receiver is not included. Lower parts kit, pistol grip, buffer tube, buffer, recoil spring, castle nut, and end plate details were not supplied with this listing.
Key Features
- 11.5-inch KAK Industry government profile barrel, 4140 CrMoV steel, Nitride finish, 1:8 twist, .223 Wylde chamber
- Carbine-length gas system with a micro low-profile steel gas block sized for a .750-inch barrel
- 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
- Free-float KeyMod handguard, 6061-T6 aluminum, black
- AR-15 TPI GI birdcage flash hider on 1/2x28 threads
- Complete AR-15 bolt carrier group (5.56/.223/.300/.350), 9310 alloy steel bolt head and 8620 alloy steel carrier body, Nitride finish
- Mil-spec quality AR-15 M4 charging handle included
- Magpul BTR pistol brace in black, compatible with standard mil-spec buffer tubes
- Lower receiver is not included.
Barrel and Gas System
The 11.5-inch KAK Industry barrel is machined from 4140 chrome moly vanadium steel in a government profile and finished in Nitride, a surface treatment that adds hardness and corrosion resistance while leaving a clean, matte black look. Its 1:8 twist rate and .223 Wylde chamber make it suited to a wide range of bullet weights. The barrel runs a carbine-length gas system through a micro low-profile steel gas block sized for the .750-inch barrel diameter, and the low-profile block helps it sit cleanly beneath a free-float handguard. At the muzzle, 1/2x28 threads carry the included AR-15 TPI GI birdcage flash hider.
Upper Receiver and Handguard
The upper receiver is machined from 7075-T6 aluminum with M4 feed ramps and an anodized finish, giving it a hard, wear-resistant surface that holds up to regular handling. It is paired with a black KeyMod handguard machined from 6061-T6 aluminum. As a free-float design, it leaves the barrel free of handguard contact, and the KeyMod slots give the builder room to mount lights, grips, handstops, and other accessories.
Bolt Carrier Group and Charging Handle
The included complete bolt carrier group is rated for 5.56, .223, .300 Blackout, and .350 Legend, with a bolt head machined from 9310 alloy steel and a carrier body machined from 8620 alloy steel, both finished in Nitride. Nitride adds hardness and corrosion resistance and helps the group stand up to repeated cycling. Paired with it is a mil-spec quality AR-15 M4 charging handle, completing the upper so it is ready to be matched with a compatible lower receiver.
Brace
A Magpul BTR pistol brace in black is included and is compatible with standard mil-spec buffer tubes. Buffer tube inclusion was not supplied with this listing and should be confirmed before purchase.
Compatibility
This kit is built for AR-15 lower receivers and .223 Wylde builds. Handguard length, lower parts kit, pistol grip, buffer tube, buffer, recoil spring, castle nut, and end plate inclusion, as well as ejection port door and forward assist configuration, were not supplied with this listing and should be confirmed before purchase.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
