This complete AR-45 pistol build kit delivers everything needed to assemble a .45 ACP platform except the serialized lower receiver. The 5-inch suppressor-ready barrel features a 1:16 twist rate optimized for .45 ACP ammunition, while the freefloat M-Lok handguard provides accessory mounting flexibility. Magpul BTR brace and mil-spec components ensure reliable function and comfortable handling.
This kit ships with all components necessary for a suppressor-ready setup. The 5-inch barrel includes .578x28 threading to accept standard .45 ACP suppressors. Builders can configure the final setup based on their specific suppressor choice and local requirements. The freefloat design maintains barrel consistency regardless of handguard mounting.
The 4-inch freefloat M-Lok handguard allows direct mounting of tactical accessories without affecting barrel harmonics. M-Lok slots provide multiple mounting positions for lights, lasers, and grips. The slim barrel profile pairs with the handguard for a balanced, compact pistol configuration.
All components meet mil-spec standards for durability and compatibility. The 9310 alloy steel bolt carrier with nitride finish resists wear and corrosion. The complete lower parts kit, mil-spec buffer tube, and standard carbine recoil spring ensure consistent cycling and reliable function across .45 ACP ammunition types.
The. Magpul BTR pistol brace mounts to the included mil-spec buffer tube for secure attachment. The brace design provides wrist support and control during shooting. Standard mil-spec compatibility ensures straightforward installation without modification.
Follow safe handling and manufacturer instructions. Ensure compliance with all applicable laws. Verify suppressor compatibility before mounting. Ensure secure mounting before operation. May. Dropship from. Davidson. Defense.
Platform: AR-45
Caliber: .45 ACP
Color: Black
Barrel Length: 5-inch
Barrel Material: 4150 CrMoV
Barrel Finish: Phosphate
Barrel Profile: Slim
Barrel Twist Rate: 1:16
Barrel Thread Pitch: .578x28
Upper Receiver Material: 6061-T6 Aluminum
Upper Receiver Finish: Type 3 Class 2 Hardcoat Anodized
Handguard Length: 4-inch
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