Arisaka Zero Retention Clamp for Sig Sauer MCX-Spear LT Standard Handguard - Black Precision Clamp for Secure Fit - ZRC-SPEAR-LT

The Patented Arisaka zero retention clamp (ZRC) is engineered to effectively minimize zero shift for lasers and iron sights mounted on the MCX Spear LT handguard. Designed specifically for the Spear LT models chambered in 5.56, 7.62x39 and 300BLK, this version does not support the Rattler. The MCX Virtus and Spear LT handguards lack sufficient upper receiver security, allowing significant flex when minor pressure is applied. This flex can cause a shift of 5 mils or more while the rifle is should