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Deploy authoritative, close-quarters firepower from an incredibly compact, concealable architecture. The P2A PATRIOT 5" 45 ACP Pistol Caliber Melonite M-LOK Pistol is a fully assembled, factory function-tested firearm meticulously engineered to deliver optimal pistol-caliber carbine (PCC) reliability right out of the box. While alternative setups suffer from erratic cycling due to misconfigured springs, this model utilizes an ultra-short 5-inch 4150 CMV steel barrel paired with a gas-block-free direct blowback operating system. This configuration matches an enhanced, heavy 45 ACP blowback bolt carrier group with a specialized heavy buffer spring network to ensure uniform extraction cycles and reliable primer ignition. Delivering the hard-hitting stopping power of the heavy .45 Auto round in a nimble, fast-tracking package, this turnkey platform removes home-built guesswork entirely. Proudly 100% designed, machined, and precision-assembled in the USA.
| Caliber Compatibility | 45 ACP |
|---|---|
| Barrel Length & Steel | 5 Inch Micro Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:16 Twist (Optimized to stabilize standard 230gr FMJ and heavy defense loads) |
| Gas / Operating System | Solid Direct Blowback Operating System (No Gas Tube or Gas Block Needed) |
| Upper Receiver | Mil-Spec AR-45 Billet Aluminum, Ejection Port Optimized for Pistol Calibers, Type III Hardcoat Anodized Black Finish |
| Lower Receiver | Dedicated AR-45 Lower, Billet 7075-T6 Aluminum, Type III Hardcoat Anodized Black - Accepts Double Stack Glock Magazines |
| Bolt Carrier Group | Premium heavy blowback BCG optimized for 45 ACP, M16 Profile, Nitride Finish, 2-Piece Bolt/Carrier |
| Muzzle Device | Standard 5/8-24 Thread Pitch, A2 Flash Hider with Crush Washer Pre-Installed |
| Handguard Structure | 7" Slim Profile Free-Float M-LOK Rail, Full-Length Top Picatinny Rail, Machined from 6061-T6 Aluminum |
| Charging Handle | Standard Milspec AR-15 Charging Handle |
| Lower Parts Kit | Complete Mil-Spec Lower Parts Kit (LPK) with Crisp Single-Stage Fire Control Group and Standard A2 Grip |
| Blade Assembly | High Density Polymer Adjustable Blade, Pistol Buffer Tube (Receiver Extension), Heavy 8oz PCC Recoil Buffer, and Extra Power PCC Buffer Spring Assembly |
| Magazine | (1) Factory Original Glock Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 5" 45 ACP M-LOK Pistol directly solves the primary challenge faced when building a sub-compact pistol-caliber firearm: balancing reciprocal slide mass against intensive spring timing. Direct blowback systems rely heavily on exact component weights to cycle safely and reliably. Sourcing separate lower components, springs, heavy blowback bolts, and buffer weights from disparate e-commerce brands frequently results in failure-to-feed or harsh out-of-battery ignition paths when running domestic defensive ammunition. Pro2A Tactical permanently eliminates these headaches by precision-machining, headspacing, and testing the entire core operating block together as a single harmonious unit.
Furthermore, deploying an ultra-compact 5-inch barrel strikes the absolute operational sweet spot for an AR-45 pattern platform. It provides a micro-footprint layout that packs away cleanly inside a tactical backpack or vehicle vehicle vault while preserving standard semi-automatic ergonomics. Built to withstand punishing rapid-fire schedules, the combination of forged 7075-T6 aluminum shells and a chemically hardened core guarantees lasting field dependability. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American craftsmanship, this complete platform delivers professional, defense-ready security with absolute confidence.
Partnering with some of the best manufacturers in the industry, we bring you a line of rifles and pistols with unrivaled quality for the cost, the “Patriot”. Every Patriot firearm is carefully built and assembled by our team of experienced armorers who knows the importance of reliability and repeatability. Every component is manufactured to milspec or better standards to ensure a high quality firearm is produced. Whether it is for sporting, hunting, or recreational needs, our Patriot Line of rifles and pistols is more than capable to live up to the task. The Patriot line combines quality with affordability because every enthusiast deserves it.
| SKU | P2APAT-45ACPGFS7OO5CAN-1.16-ASS |
|---|---|
| Model | PATRIOT |
| Barrel Length | 5 inch |
| Manufacturer | Pro2A Tactical |
