ST Kinetics BMCR
ST Kinetics (ST Engineering Land Systems) · Assault Rifle · Prototype · 2014
Also known as: Bullpup Multirole Combat Rifle, BMCR
Overview
The ST Kinetics BMCR (Bullpup Multirole Combat Rifle) is a prototype Singaporean assault rifle unveiled at the 2014 Singapore Airshow as the world's shortest bullpup carrying a 14.5-inch barrel. The fully ambidextrous gas-operated rifle was designed with forward case ejection so it can be safely fired from either shoulder, and was offered in 5.56x45mm NATO, 6.8mm Remington SPC, and 7.62x39mm. The BMCR remained a prototype and eventually evolved into the BR18 announced in 2018.
Specifications
| Weight (empty) | 2900 g (102.3 oz) |
| Overall Length | 645 mm (25.39") |
| Barrel Length | 368 mm (14.49") |
| Action Type | Gas Operated Short Stroke |
| Firing Mechanism | Hammer Fired |
| Trigger Type | Single Stage |
| Magazine Capacity | 30 rounds |
| Magazine Type | Detachable Box |
| Muzzle Velocity | 870 m/s (2854 fps) |
| Effective Range | 500 m (547 yd) |
| Rate of Fire | 750 rpm |
| Barrel Rifling | Right Hand |
| Rifling Twist | 178 mm (7.01") |
| Number of Grooves | 6 |
| Frame Material | Polymer |
| Barrel Material | Steel |
| Stock Material | Polymer |
| Finish | Phosphate |
Calibers
- 5.56x45mm NATO · primary · SS109 — also known as 5.56 NATO, .223 Remington (parent)
Features
- Firing modes: Semi Automatic, Full Automatic
- Feed systems: Stanag Box Magazine
- Safety mechanisms: Ambidextrous Safety, Fire Selector
- Features: Bullpup Configuration, Fully Ambidextrous, Forward Case Ejection, Picatinny Rails Three Six Nine Twelve, Dry Lubricant Barrel Coating, Over The Beach Capable, Multi Caliber Capable, Modular Handguard
Variants
- ST Kinetics BR18 — Production Evolution
- ST Kinetics CMCR — Conventional Layout Sibling
Production
Production years: 2012-2018
Prototype only; never entered serial production; design lineage continued in the BR18
Origin
Country of origin: Singapore
Designer: ST Kinetics design team
Notes
Remarkable barrel-to-overall-length ratio: a 368mm (14.5 inch) barrel housed in a 645mm rifle. Featured a proprietary dry-lubricant barrel coating to repel sand, dust and powder soot, plus over-the-beach capability for amphibious operations.
Background
The BMCR was marketed by ST Kinetics as 'the world's shortest bullpup,' and its rotating bolt was designed so that the case ejection direction could be reversed in seconds, making it one of the very few truly ambidextrous bullpups ever offered.