Details
Big Bore Bonanza 10.5-Inch Carbine-Gas 1:24 .450 Bushmaster AR-15 Barrel Bundle with KAK .458 Compensator, Gas Block & Gas Tube
The Big Bore Bonanza bundle pairs a 10.5-inch .450 Bushmaster HBAR barrel, model B450CHB10.5124(P), with the gas system and muzzle hardware needed to get it ready for a big-bore AR-15 build. The barrel runs a carbine-length gas system with a 1:24 twist and a Parkerized finish. It arrives with an Omega Mfg. stainless steel carbine-length gas tube, a micro low-profile steel gas block, a KAK .458 compensator, a 5/8-inch black crush washer, and assembled small parts. Because the pieces come together in one package, builders don't have to match the gas block, tube, and muzzle device separately.
Key Features
- 10.5-inch HBAR barrel, model B450CHB10.5124(P), .450 Bushmaster, 1:24 twist, Parkerized/Phosphate finish
- Carbine-length gas system with a .750-inch gas block journal
- Omega Mfg. AR-15 carbine-length stainless steel gas tube, model MAR008
- Micro low-profile steel gas block, .750-inch diameter
- KAK .458 compensator, model COMP-5/8-32-458, on 5/8x32 threads
- 5/8-inch black crush washer included
- Assembled small parts included
Barrel and Gas System
The 10.5-inch barrel is built in an HBAR heavy profile and chambered in .450 Bushmaster, with a 1:24 twist rate. It is finished in Parkerized/Phosphate, a matte, corrosion-resistant treatment that gives it a clean, uniform look. The gas system is carbine-length and uses the included Omega Mfg. stainless steel gas tube (model MAR008) with a micro low-profile steel gas block sized for the barrel's .750-inch gas journal. The low-profile block helps it sit cleanly beneath a free-float handguard.
Muzzle Device
The included KAK .458 compensator (model COMP-5/8-32-458) threads onto the barrel's 5/8x32 muzzle and is secured with the supplied 5/8-inch black crush washer. It is sized for .458-bore applications such as the .450 Bushmaster.
Included Components
This bundle includes the 10.5-inch .450 Bushmaster HBAR barrel, the Omega carbine-length stainless steel gas tube, the .750-inch micro low-profile steel gas block, the KAK .458 compensator, the 5/8-inch black crush washer, and assembled small parts.
Compatibility
This bundle is built for AR-15 platforms chambered in .450 Bushmaster. Upper receiver, handguard, bolt carrier group, and charging handle are not included. A bolt carrier group and upper receiver suited to .450 Bushmaster must be sourced separately.
Follow all manufacturer instructions and safe handling practices.
Ensure compliance with all applicable federal, state, and local laws.
