Ruger · Rifle
Ruger AR-556 MPR
Gas-operated · 5.56x45mm NATO · introduced 2017
Also known as AR-556 Multi-Purpose Rifle
About the Ruger AR-556 MPR
The Ruger AR-556 MPR (Multi-Purpose Rifle) is a flat-top AR-15-pattern semi-automatic rifle built around an 18-inch cold-hammer-forged 4140 chrome-moly barrel with 5R rifling and a rifle-length gas system. It pairs Ruger's free-float 15-inch M-LOK handguard, the Ruger Elite 452 AR-Trigger, Magpul furniture and a Ruger muzzle brake for smoother, lower-recoil operation than a standard carbine.
Ruger AR-556 MPR specifications
General
- Type
- Rifle
- Action
- Gas-operated
- Firing mechanism
- Hammer-fired
- Trigger
- Single stage
- Calibres
- 5.56x45mm NATO
- Magazine capacity
- 30 rounds
- Magazine
- Detachable box magazine
Dimensions
- Barrel length
- 457 mm (18.0 in)
- Overall length
- 921 mm (36.3 in)
- Weight (empty)
- 3.06 kg (6.75 lb)
Barrel
- Rifling twist
- 1:8 in (203 mm)
- Rifling
- Right hand
- Grooves
- 5
Materials
- Barrel
- Steel
- Receiver / frame
- Aluminum
- Stock
- Polymer
- Finish
- black_anodized
Performance
- Muzzle velocity (typical)
- 945 m/s (3100 fps)
- Effective range
- 500 m
History
- Introduced
- 2017
- Production status
- In production
- Country of origin
- US
Features
- Free float handguard
- M lok handguard
- Muzzle brake
- Adjustable stock
- Accessory rail
- Cold hammer forged barrel
Safety
- Manual safety
The rifle-length gas system on an 18-inch barrel is uncommon and contributes to softer recoil and reliable cycling. Salt-bath nitrided barrel for corrosion resistance.
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