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Deploy maximum personal defense capability from the most compact, ultra-short footprint possible in the AR platform. The P2A PATRIOT 3" 9mm Pistol Caliber Melonite M-LOK Pistol is a fully assembled, factory function-tested micro firearm meticulously optimized to guarantee absolute pistol-caliber carbine (PCC) reliability within a sub-compact architecture. While traditional piecemeal home builds often fail due to mismatched buffer metrics and out-of-spec springs on ultra-short barrels, this model pairs a micro-sized 3-inch 4150 CMV steel barrel with a low-maintenance, gas-block-free direct blowback operating system. This configuration matches an enhanced, heavy 9mm blowback bolt carrier group with a specialized heavy buffer spring network to ensure uniform extraction cycles and reliable primer ignition. Delivering the low operating costs and widespread availability of the 9x19mm round in a nimble, fast-tracking package, this turnkey platform removes all build-related stress. Proudly 100% designed, machined, and precision-assembled in the USA.
| Caliber Compatibility | 9mm Luger / 9x19mm Parabellum |
|---|---|
| Barrel Length & Steel | 3 Inch Micro Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:10 Twist (Optimized to stabilize a wide range of target and heavy defensive ammunition) |
| Gas / Operating System | Solid Direct Blowback Operating System (No Gas Tube or Gas Block Needed) |
| Upper Receiver | Mil-Spec AR-9 Billet Aluminum, Ejection Port Optimized for Pistol Calibers, Type III Hardcoat Anodized Black Finish |
| Lower Receiver | Dedicated AR-9 Style Lower, Billet 7075-T6 Aluminum, Type III Hardcoat Anodized Black Finish |
| Bolt Carrier Group | Premium heavy blowback BCG optimized for 9mm, M16 Profile, Nitride Finish, Glock/Colt Compatible |
| Muzzle Device | Standard 1/2-28 Thread Pitch, Slimline Flash Can |
| Handguard Structure | 4" 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) PMAG or Compatible 9mm Glock Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A PATRIOT 3" 9mm M-LOK Pistol directly solves the primary challenge faced when building an ultra-short, sub-compact pistol-caliber firearm: balancing reciprocal slide mass against micro spring timing windows. Direct blowback systems rely heavily on exact component weights to cycle safely and reliably. Sourcing separate lower components, springs, 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 standard ammunition on a 3-inch setup. 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 3-inch barrel strikes the absolute operational sweet spot for an AR-9 pattern platform meant for maximum portability. It provides a micro-footprint layout that packs away cleanly inside standard discreet sling bags or vehicle vaults while preserving standard modern semi-automatic ergonomics and modular accessory customization. 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-9MMAX4N3CAN-1.10-ASS |
|---|---|
| Model | PATRIOT |
| Barrel Length | 3 inch |
| Pistol Caliber | 9mm |
| Manufacturer | Pro2A Tactical |