This spring-loaded MBUS (Magpul back-up sight) front sight can be easily activated from either side or by pressing on the top. The flip up sight clamps to any Mil-Std 1913 Picatinny railed handguard. Protective wings shield the spring-locking A2 front sight post. Includes elevation adjustment tool. Impact resistant polymer construction resists operational abuse. Weighs 1.2 ounces. MADE IN THE U.S.A.
NOTE: CANNOT be mounted to a railed gas block due to excess heat issues.