PRO2A 7.5" 450 Bushmaster 1/24 Pistol Length Melonite M-LOK AR-15 Upper with Flash Can
Product Overview
Dominate close quarters with raw big-bore ballistic impact using the PRO2A 7.5" 450 Bushmaster Pistol Length Melonite M-LOK AR-15 Upper with Flash Can. This premium, factory-assembled complete upper receiver functions as the ultimate heavy-hitting payload in an ultra-compact package. Engineered around a short, rigid 7.5-inch 4150 CMV Melonite-treated barrel with a 1/24 twist rate, this assembly manages fierce muzzle signatures using an integrated linear slimline flash can. It locks perfectly onto any standard AR-15 lower receiver set up as a pistol or registered Short Barreled Rifle (SBR).
Key Features
- Linear Muzzle Flash Can: Diverts massive combustion blasts, hot gases, and high noise forward and away from the firing position, saving your ears and keeping indoor lanes or brush blinds manageable.
- Premium Melonite / Nitride Treated Barrel: Crafted from heavy-duty 4150 CMV steel and liquid QPQ Nitride/Melonite treated inside and out to maximize surface hardness and mitigate throat erosion from high-pressure straight-walled shells.
- Optimized 1/24 Twist Rate: Precision button rifling calculated specifically to cleanly spin-stabilize heavy-grain straight-wall hunting slugs (250gr to 300gr) over short distances.
- Enlarged Ejection Port Upper: Custom forged receiver modified with an expanded clearing window to guarantee flawless cycle-feeding and casing extraction of thick .450-caliber brass without mechanical jams.
- Extended Free-Float M-LOK Rail: A lightweight 9-inch handguard entirely surrounds the low-profile gas block and slips over the base of the flash can, offering ample real estate for accessory mounting and modern hand placements.
Technical Specifications
| Caliber / Chamber | 450 Bushmaster |
|---|---|
| Barrel Length | 7.5 Inches |
| Barrel Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Twist Rate | 1:24 Twist Button Rifled |
| Barrel Finish | Melonite / QPQ Nitride Finish |
| Gas System Length | Pistol-Length Gas System with 0.750" Low Profile Gas Block |
| Upper Receiver | Forged 7075-T6 Aluminum, Widened Ejection Port, Single Large Feed Ramp, Forward Assist & Dust Cover Installed, Type III Hardcoat Anodized |
| Handguard | 9" Premium Slim Free-Float M-LOK Handguard (6061-T6 Aluminum) with Full Top Picatinny Rail |
| Muzzle Thread & Device | 5/8x24 TPI; Premium Slimline Linear Blast-Forwarding Flash Can |
| Manufacturing Origin | 100% Made in the USA |
Why Choose the PRO2A 7.5" 450 Bushmaster Flash Can Upper?
The 450 Bushmaster cartridge delivers massive "Thumper" power designed to bring down large game quickly. However, deploying this round through an ultra-short 7.5-inch barrel usually produces an overwhelming, spherical shockwave that can disorient the shooter. The Pro2A Tactical Flash Can Upper Assembly bridges this gap perfectly. By channeling the concussion straight forward through a linear flash can, it dramatically tames the blast profile at the shooter's ear. Paired with a widened big-bore receiver and premium Melonite engineering, this range-tested assembly gives you a highly maneuverable, reliable, and comfortable platform for tracking hogs in thick brush or securing a heavy-caliber defensive setup.
