Young Mfg Ar-15/M16 Front Sight Gas Block

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Flip-up, front, back-up sight deploys instantly when you need it, folds down when you don’t. Steel push-pin secures spring-loaded sight ramp in down position, allows unobstructed sight path when using scope or other optics. Ball and spring provide positive detent for front post elevation adjustment. Large, protective ears guard post against damage. Gas block locks onto standard diameter barrels with three set screws; includes single, Weaver-style rail for mounting flashlight or other small tactical accessories. Machined from lightweight aluminum. Mfg: Young Mfg SPECS: Aluminum, black anodized. 3″ (7.6cm) long, 1″ (2.5 cm) wide. Sight Ramp: 2 1/2″ (6.4cm) high when raised. Fits .750″ (1.9cm) standard barrels. Weight – 3.6 oz (102 g). Requires AR-15 type front sight blade spring and plunger, not included.