GP Arms Patriot 4.1
GP Arms · Pistol · Discontinued
Also known as: Patriot 4.1
Overview
The GP Arms Patriot 4.1 is a semi-custom double-stack 1911-pattern pistol chambered in 9x19mm Parabellum, manufactured by GP Arms in East Tennessee, USA. Built on a milled Picatinny-railed frame with an ergonomic injection-molded polymer grip module, the Patriot 4.1 features a 4.1-inch match-grade bull barrel, ambidextrous thumb safeties, a flat skeletonized aluminum trigger with a 3.5-4 lb pull, and a full-length one-piece .250-inch solid steel guide rod with a flat wire chrome silicon recoil spring. The slide is machined from 416 stainless steel with optics-ready cuts compatible with RMR, RMSc, and Delta Point Pro footprints, as well as lightening cuts for reduced reciprocating mass. The standard magazine is an MBX Extreme 9mm Defender series 126mm holding 20 rounds, with an optional 22-round 140mm magazine available. Available in aluminum (28.5 oz) or steel frame (33 oz) configurations, the Patriot 4.1 is positioned as a competition-ready yet carry-capable double-stack 1911 starting at $1,950. Frame finish options include anodized aluminum (clear or black) and Cerakote (Burnt Bronze, FDE), while barrel options include standard bull, ported bull, or threaded variants.
Specifications
| Weight (empty) | 808 g (28.5 oz) |
| Overall Length | 196 mm (7.72") |
| Barrel Length | 104 mm (4.09") |
| Height | 140 mm (5.51") |
| Width | 33 mm (1.30") |
| Action Type | Short Recoil |
| Firing Mechanism | Single Action |
| Trigger Type | Single Action |
| Trigger Pull | 17 N (3.8 lbf) |
| Magazine Capacity | 20 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 370 m/s (1214 fps) |
| Muzzle Energy | 510 J (376 ft·lbf) |
| Effective Range | 50 m (55 yd) |
| Maximum Range | 1800 m (1968 yd) |
| Barrel Rifling | Right Hand |
| Rifling Twist | 254 mm (10.00") |
| Number of Grooves | 6 |
| Frame Material | Aluminum |
| Slide Material | Stainless Steel |
| Barrel Material | Stainless Steel |
| Finish | Nitride |
Calibers
- 9x19mm Parabellum · primary · 9mm NATO — also known as 9mm Luger, 9mm NATO, 9x19mm
Features
- Firing modes: Semi Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Ambidextrous Thumb Safety
- Features: Optics Ready, Picatinny Rail, Match Grade Bull Barrel, Flat Skeletonized Trigger, Modular Polymer Grip, Full Length Guide Rod, Double Stack Magazine, Front Rear Slide Serrations, Lightening Cuts
Variants
- GP Arms Patriot 4.8 — Extended Barrel
- GP Arms Patriot 4.1 Steel Frame — Steel Frame
Production
Semi-custom production; exact numbers not disclosed
Origin
Country of origin: United States
Notes
The Patriot uses MBX Extreme magazines, which are widely regarded as among the most reliable double-stack 1911 magazines available. The modular grip system allows for customization without a complete frame swap. Weight listed is for the aluminum frame variant; the steel frame version weighs approximately 936g (33 oz) empty.
Background
GP Arms entered the competitive double-stack 1911 market dominated by Staccato and Bul Armory, offering a semi-custom build quality at a competitive price point. The Patriot's modular grip system and match-grade components have earned it a following among action-pistol competitors and 1911 enthusiasts seeking a high-value alternative to established brands.