RCM H - MCX SPEAR M7 Magwell GHM The MPX RCM works great

The MPX RCM works great for unconventional shooting positions

Weight unloaded with PMAG 20s

The RCM works great for unconventional shooting positions

the AMC features distinct witness marking locations for both turrets and the rear focusing ring

This model may not make full contact with some lasers recoil lugs including but not limited to the L3 NGAL and EOTech OGL

RCM H - MCX SPEAR M7 Magwell GHM The MPX RCM works greatRifle Combat Magwell Heavy for SIG SPEAR M7 The SPEAR RCM H (Rifle Combat Magwell Heavy) features a 250% larger flared funnel surface allowing for consistent and fast reloads under any condition and is designed for the SIG SPEAR and M7 lowers. This model will not fit Spear LT lowers, for Spear LT RCMs click here instead. Compatible with all major magazines on the market as well as higher capacity options like the Magpul D50. FDE models are coated