Details
Vilox 11.5-Inch Carbine-Gas 1:8 .223 Wylde AR-15 Free-Float M-LOK Handguard Pistol Full Build Kit with Magpul BTR Brace
The Vilox 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 10-inch black free-float M-LOK handguard with a quad rail and a Magpul BTR pistol brace in black. The kit ships with a complete bolt carrier group, a mil-spec charging handle, and a buffer system built around a mil-spec heavy-duty six-position buffer tube. 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, recoil spring, and castle nut 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 stainless steel gas tube and a micro low-profile steel 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 with a 1/2-inch black crush washer
- Complete AR-15 bolt carrier group (5.56/.223/.300/.350), 9310 alloy steel carrier, Nitride finish
- Mil-spec AR-15 charging handle included
- Mil-spec heavy-duty six-position buffer tube, 3 oz. buffer, and mil-spec AR-15/M16 receiver end plate
- Magpul BTR pistol brace in black included
- Lower receiver is not included.
Barrel and Gas System
The 11.5-inch barrel from KAK Industry 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 stainless steel gas tube and 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. The muzzle is threaded 1/2x28 and includes a 1/2-inch black crush washer. A muzzle device is not listed with this kit.
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 9310 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 AR-15 charging handle, completing the upper so it is ready to be matched with a compatible lower receiver.
Buffer System and Brace
The kit includes a mil-spec heavy-duty six-position buffer tube, a 3-ounce buffer, and a mil-spec AR-15/M16 receiver end plate. A Magpul BTR pistol brace in black is included and is compatible with the mil-spec buffer tube used in this build.
Compatibility
This kit is built for AR-15 lower receivers and .223 Wylde builds. Lower parts kit, pistol grip, recoil spring, and castle nut 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.
