Heckler & Koch MP5/10
Heckler & Koch · Submachine Gun · Discontinued · 1991
Also known as: MP5/10, MP5-10, MP5/10A3
Overview
The Heckler & Koch MP5/10 is the 10mm Auto variant of the iconic MP5 submachine gun, developed at the request of the FBI in the early 1990s. It retains the roller-delayed blowback action of the MP5 but adds a last-round bolt hold-open device, a suppressor-threaded barrel, and straight translucent polymer magazines suited to the straight-walled 10mm cartridge. It was made almost exclusively for the FBI.
Specifications
| Weight (empty) | 3000 g (105.8 oz) |
| Overall Length | 680 mm (26.77") |
| Folded Length | 550 mm (21.65") |
| Barrel Length | 225 mm (8.86") |
| Action Type | Roller Delayed Blowback |
| Firing Mechanism | Hammer Fired |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 425 m/s (1394 fps) |
| Muzzle Energy | 1056 J (779 ft·lbf) |
| Effective Range | 100 m (109 yd) |
| Rate of Fire | 800 rpm |
| Barrel Rifling | Right Hand |
| Number of Grooves | 6 |
| Frame Material | Polymer |
| Slide Material | Steel |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Phosphate |
Calibers
- 10mm Auto · primary — also known as 10mm Automatic, 10x25mm
Features
- Firing modes: Semi Automatic, Burst 3, Full Automatic
- Feed systems: Detachable Box Magazine
- Safety mechanisms: Ambidextrous Safety Selector, Hammer Fired Closed Bolt
- Features: Last Round Bolt Hold Open, Threaded Barrel For Suppressor, Straight Translucent Magazine, Interchangeable Hi Lo Locking Pieces, Retractable Stock
Variants
- Heckler & Koch MP5/40 — Caliber Variant
Base model
Service history
Operators
- Federal Bureau of Investigation Hostage Rescue Team · adopted 1994
Production
Estimated total produced: 5,000 · Production years: 1991-2000
Produced almost exclusively for the FBI; approximate figure
Origin
Country of origin: Germany
Discontinued: 2000
Notes
Built on the MP5A2/A3 chassis. The standard FBI trigger group offered safe, semi-automatic, 3-round burst and full-automatic. Interchangeable 'HI' and 'LO' impulse locking pieces allowed tuning between full-power and reduced FBI loads. Weight, retracted length and exact 10mm muzzle velocity from the 225 mm barrel are estimated from the base MP5 chassis.
Background
The FBI commissioned the MP5/10 after adopting the 10mm Auto in the wake of the 1986 Miami shootout, so the carbine would share ammunition with the Bureau's Smith & Wesson 1076 pistol; the punishing recoil of full-power 10mm eventually pushed the FBI toward .40 S&W and 5.56mm carbines.