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Maximize your close-range stopping power, control intense muzzle concussion vectors, and streamline your entire custom assembly with a masterfully matched components ecosystem. The PRO2A 7.5" 450 Bushmaster Pistol Length Upper with Flash Can Kit delivers massive big-bore ballistic energy in a highly compact layout, bundling a complete tactical upper module and blast-forwarding flash can directly with a dedicated 450 Bushmaster bolt carrier group, a full internal lower parts kit, and an adjustable pistol stabilizing Blade buffer system assembly. Built around a premium forged 7075-T6 aluminum receiver engineered natively to manage massive big-bore case ejections, this master builder package centers on a rugged 7.5-inch medium profile barrel. The specialized 1:24 twist rifling guarantees reliable stabilization for heavy straight-walled ammunition. By delivering every critical internal and structural component in a single headspaced package, this turn-key kit completely removes assembly guesswork from your custom build project.
| Caliber / Chambering | 450 Bushmaster (Big-Bore Straight-Walled Rifle Cartridge) |
|---|---|
| Upper Receiver Housing | Milspec Forged 7075-T6 Aluminum, Single Large Feed Ramp, Forward Assist & Dust Cover, Type III Hardcoat Anodized (Ejection Port Enlarged for Big Bore Calibers) |
| Charging System | Standard Mil-Spec Aluminum Charging Handle |
| Barrel Length / Steel | 7.5 Inches / 4150 Chrome Moly Vanadium (CMV) Structural Steel |
| Barrel Finish & Profile | QPQ Melonite / Black Nitride Finish (Internal & External) — Medium Profile |
| Twist Rate / Feed Ramps | 1:24 Twist / Precision Machined Single-Large M4 Feed Ramp Profile for Reliable Straight-Wall Case Feeding |
| Gas System Mechanics | Pistol Length Direct Impingement with a 0.750" Low-Profile Steel Gas Block |
| Bolt Carrier Group (BCG) | Milspec Full Auto M16 Profile, Nitride Finish, 8620 Carrier, 9310 Bolt, MPI Tested |
| Lower Parts Kit | Complete AR-15 Lower Parts including Mil-Spec Trigger Group, Springs, Detents, Pins, and Pistol Grip |
| Stabilizer Assembly | High Density Adjustable Blade, Pistol Buffer Tube, Weighted Recoil Buffer, and Buffer Spring |
| Handguard System | 9-Inch Ultra-Lightweight Free-Float 6061-T6 Aluminum Modular M-LOK Rail with Continuous Top Picatinny Real Estate |
| Muzzle Configuration | Slimline Micro Linear Flash Can Blast Shield / 5/8x24 Thread Pitch (Recessed under Handguard) |
| Manufacturing Origin | 100% Designed, Machined, and Assembled in the United States |
| Warranty Coverage | Protected by Pro2A Tactical's Structural Lifetime Warranty |
The 450 Bushmaster cartridge delivers massive downrange kinetic energy thresholds that far eclipse standard intermediate formats, serving as an absolute powerhouse for compact security setups and dense-cover hunting environments. By pairing this heavy-hitting caliber with an integrated linear flash can, full internal lower components, and a specialized heavy buffer recoil setup, Pro2A Tactical simplifies your precision rifle configuration project. It provides a complete, premium, ready-to-fire builder kit with strict quality control that delivers maximum muzzle compliance and exceptional field consistency right out of the box.
| SKU | P2A450BAX9PIS75CAN-TK-KIT |
|---|---|
| Barrel Length | 7.5 inch |
| Rifle Caliber | 450 Bushmaster |
| Manufacturer | Pro2A Tactical |