Troy type folding Tactical rear sight. Suitable for all M4/M16 & AR-Series with standard 20mm Gun rail. Install on the 20mm rail with a large thumb screw. Windage adjustment by thumb dial. Large and small holes flip selection for 300 & 600 meters aiming. Spring Loaded Flip-Up system. When you install a scope on your rifle ,you won't block your sight by Rear Sight. No need to release lock to fold. Constructed of alloy metal, extra strong shock absorption ability.
Specifications : Color - Black Weight - 70g Material - Alloy metal
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