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AR-18
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Quick Overview
Overview
The AR-18 is a gas-operated assault rifle designed by Arthur Miller in 1963 for ArmaLite. Uses a short-stroke gas piston system instead of direct impingement. While never adopted broadly, its gas piston design influenced the SA80, G36, HK416, and many modern piston-driven rifles.
Calibers & Ammunition
Dimensions
Overall Length
38.5 in (978 mm)
Barrel Length
18 in (457 mm)
Weight
7.18 lb (3.26 kg) unloaded
Mechanical
Action Type
Gas-operated, rotating bolt
Trigger Type
Single-stage
Sights Type
Rear aperture, front post
Magazine Capacity
20 or 30
Additional Information
action
Gas-operated (short-stroke piston), rotating bolt
How does the AR-18 compare?
Pick any other firearm for a side-by-side spec breakdown.