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Step up to an exceptionally agile defensive and close-quarters personal defense weapon (PDW) explicitly engineered from the ground up to serve as the ultimate hosting platform for sound suppression hardware. The P2A PATRIOT 5" 45 ACP Pistol Caliber Melonite M-LOK Pistol - For Suppressors is a fully assembled, factory function-tested complete firearm built to deliver quiet, hard-hitting downrange performance and absolute structural stability right out of the box. While standard small-caliber platforms rely on loud supersonic flight paths, the hard-hitting 45 ACP cartridge is natively subsonic across standard grain weights, completely eliminating concussive sonic cracks without sacrificing kinetic stopping energy. To ensure maximum accessory compatibility and tight thread indexing, this model pairs a micro 5-inch 4150 CMV steel blowback barrel with a highly compressed handguard structure, allowing full clearance for direct-thread or quick-detach suppressor locking collars. By matching internal component architecture with a custom heavy-duty bolt carrier group and heavy pistol caliber buffer setup, this profile tames direct blowback gas paths and dampens cyclical bolt slap. Featuring a lightweight free-float M-LOK rail and a dedicated Glock-style magazine layout, this turnkey AR pistol completely eliminates assembly stress and building frustrations. Proudly 100% designed, machined, and precision-assembled in the USA with a Pro2A Tactical Lifetime Factory Warranty.
| Caliber | 45 ACP |
|---|---|
| Barrel Length & Steel | 5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Twist Rate | 1:16 Twist (Optimized to fully stabilize heavy defensive subsonic projectiles) |
| Upper Receiver | AR-15/AR-45 Billet Aluminum, Slick Side Profile, Ejection Port Optimized for Pistol Calibers, Type III Hardcoat Anodized Black |
| Lower Receiver | Dedicated AR-45 Mil-Spec Billet 7075-T6 Aluminum, Glock Magazine Well Compatible, Type III Hardcoat Anodized Black Finish |
| Gas Operating Block | Direct Blowback System (No Gas Block Required) |
| Muzzle Device | Standard 5/8-24 Thread Pitch, Thread Protector Pre-Installed (Suppressor Ready) |
| Handguard Rail | 4" Slim Free-Float M-LOK Handguard, Machined from 6061-T6 Aluminum with Top Picatinny Rail (Leaves muzzle threads fully exposed for suppressors) |
| Bolt Carrier Group | Dedicated 45 ACP Blowback Bolt Assembly, Heavy Duty Two Piece Construction, Nitride/Melonite Treated, Glock Compatible |
| 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, Heavy 8oz PCC Buffer, Extra Power PCC Buffer Spring, Castle Nut, Latch Plate |
| 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 - For Suppressors directly solves the most common technical issues encountered with standard custom pistol caliber builds: violent cycling, sub-optimal feeding angles from mismatched lower units, and part-by-part tolerance stacking. When constructing specialized direct-blowback platforms from mismatched manufacturers, builders frequently fight feed failures, light primer strikes, or cycling headaches due to inconsistent bolt weights and spring ratios. Pro2A Tactical completely eliminates these engineering frustrations by headspacing, aligning, and function-testing the entire operating block as a single unit, ensuring that the heavy blowback bolt, barrel extension, feed ramps, muzzle device threads, and buffer system interface flawlessly right out of the box.
Furthermore, choosing a 5-inch barrel optimized for the .45 ACP cartridge strikes the ultimate operational sweet spot for heavy kinetic energy transfer and intermediate-range portability when deploying specialized sound suppression hardware. Originally engineered to maximize velocity while maintaining an incredibly tight handling profile, this configuration pairs perfectly with a specialized heavy PCC buffer framework. This setup broadens mechanical dwell structures, tames bolt speeds, smooths out case extraction, and drastically minimizes felt muzzle rise, allowing for comfortable, high-volume fire during intense training routines or closed-quarter defensive scenarios.
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 patriot deserves it.
| SKU | P2APAT-45ACPAX4OO525-1.16-ASS |
|---|---|
| Model | PATRIOT |
| Barrel Length | 5 inch |
| Pistol Caliber | 45 ACP |
| Manufacturer | Pro2A Tactical |
