Details
Vilox 11.5-Inch Carbine-Gas 1:8 .223 Wylde AR-15 Free-Float M-LOK Handguard Pistol Full Build Kit with SB Tactical SBA3 Brace
The Vilox Full Build Kit is built around an 11.5-inch KAK Industry .223 Wylde barrel machined from 4140 chrome moly vanadium gun steel in a government profile, with a carbine-length gas system and a Nitride finish. It is paired with a 10-inch black free-float M-LOK handguard with a quad rail and an SB Tactical SBA3 adjustable pistol stabilizing brace in black polymer. 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, end plate, and muzzle device details were not supplied with this listing.
Key Features
- 11.5-inch KAK Industry government profile barrel, 4140 CrMoV gun steel, Nitride finish, 1:8 twist, .223 Wylde chamber
- Carbine-length gas system with a micro low-profile gas block sized for a .750-inch barrel
- 7075-T6 aluminum upper receiver with M4 feed ramps, anodized finish
- 10-inch free-float M-LOK handguard with quad rail, 6061-T6 aluminum, black
- 1/2x28 muzzle threads
- Complete AR-15 bolt carrier group (5.56/.223/.300/.350), 8620 alloy steel carrier, Nitride finish
- Mil-spec quality AR-15 M4 charging handle included
- SB Tactical SBA3 adjustable pistol stabilizing brace, polymer, black
- Lower receiver is not included.
Barrel and Gas System
The 11.5-inch barrel from KAK Industry is machined from 4140 chrome moly vanadium gun 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 gas block sized for the .750-inch barrel diameter, and the low-profile block helps it sit cleanly beneath a free-float handguard. The muzzle is threaded 1/2x28 for a compatible muzzle device.
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 10-inch black free-float M-LOK handguard machined from 6061-T6 aluminum, with a quad rail section for Picatinny mounting. As a free-float design, it leaves the barrel free of handguard contact, and the M-LOK 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 carrier machined from 8620 alloy steel and finished in Nitride, a surface treatment that adds hardness and corrosion resistance and helps the carrier 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
An SB Tactical SBA3 adjustable pistol stabilizing brace in black polymer is included. It is designed to slide onto and adjust along a mil-spec carbine buffer tube. Buffer tube type 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. Muzzle device inclusion, 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.
