The G&P GBB Short Railed Handguard with SAI QD System for WA M4A1 Series is a truely unique design that provides a sleek, stylish and functional design for M4 / AR-15 / M16 GBB series users. M-lok slots are found on the side for attaching accessories. At the front is a detachable flash hider cage that was designed to contain all the muzzle flashes.