Davidson Defense Mini Sledge 10.5-inch Carbine-Gas 1:24 .450 Bushmaster AR-15 Freefloat Keymod Handguard Pistol Upper Build Kit

Mini Sledge 10.5-inch Carbine-Gas 1:24 .450 Bushmaster AR-15 Freefloat Keymod Pistol Upper Build Kit

The Mini Sledge is a .450 Bushmaster AR-15 Upper Build Kit built around a compact 10.5-inch carbine-length gas platform. The kit centers on a 10.5-inch HBAR profile parkerized steel barrel with a 1:24 twist rate and 5/8x32 thread pitch, paired with a KAK .458 compensator and a black 5/8-inch crush washer. A micro low-profile steel gas block at 0.750 diameter and a carbine-length stainless steel gas tube are included on the front end. The billet Panhead upper receiver features a .458 ejection port door, paired with a 10-inch ultra-slim freefloat Keymod handguard. BCG and charging handle are not included.

Key Features

• 10.5-inch HBAR profile parkerized steel barrel, 1:24 twist, 5/8x32 thread pitch, .450 Bushmaster
• Carbine-length gas system
• Carbine-length stainless steel gas tube
• Micro low-profile steel gas block, 0.750
• KAK .458 compensator, 5/8x32, black 5/8-inch crush washer included
• Billet Panhead upper receiver, .458 ejection port door
• 10-inch ultra-slim freefloat Keymod handguard
• BCG and charging handle not included

Perfect For

• Builders sourcing a compact .450 Bushmaster AR-15 pistol upper build kit with a billet Panhead upper receiver, 10.5-inch HBAR parkerized barrel, and 10-inch ultra-slim Keymod freefloat handguard, pairing it with their own .458 SOCOM and .450 Bushmaster bolt carrier group and charging handle
• Shooters building a compact 10.5-inch carbine-gas .450 Bushmaster pistol platform who prefer to select their own BCG while having the parkerized HBAR barrel, billet Panhead upper receiver with .458 ejection port door, KAK .458 compensator, and ultra-slim Keymod freefloat handguard covered in one kit
• AR-15 pistol builders who want a .450 Bushmaster upper build kit with a billet Panhead upper receiver, .458 ejection port door, and KAK .458 compensator at 5/8x32 without sourcing components separately

Barrel and Muzzle Device

The 10.5-inch HBAR profile barrel is chambered in .450 Bushmaster and constructed from parkerized steel with a 1:24 twist rate and 5/8x32 thread pitch, which matches the included KAK .458 compensator. A black 5/8-inch crush washer, a micro low-profile steel gas block at 0.750 diameter, and a carbine-length stainless steel gas tube cover the front end gas configuration on this carbine-length platform.

Upper Receiver and Handguard

The billet Panhead upper receiver features a .458 ejection port door sized for the .450 Bushmaster platform. The 10-inch ultra-slim freefloat Keymod handguard features Keymod attachment points along the body for accessory mounting. These two components define the exterior structure of the upper assembly on this AR-15 pistol platform.

Follow safe handling and manufacturer instructions. Ensure compliance with all applicable federal, state, and local laws. BCG and charging handle are not included. Verify compatibility with your specific .450 Bushmaster lower receiver before use.