Next Level Armament NLA Sig Sauer MCX Rifle Charging Handle w/ Block Kit Black

Next Level Armament NLA Sig Sauer MCX Rifle Charging Handle w/ Block Kit Black. The MCX uses a molded plastic OEM block. Over time the block becomes brittle and can break. We manufacture our block from solid 4140PH steel then Nextride coated it for a long lasting reliable and durable replacement for the OEM molded plastic block. NOTE: Sig redesigned the spring plate with the new Virtus and Rattler MCX models. This spring plate only works with the previous MCX models without the pinned block. The