This Ncstar VMARTKMC AR15 Triangle KeyMod Handguard fits carbine Length Gas Systems. Will also fit most Ruger AR-556. This triangle key mod Hand guard is easy drop-In install fits into Delta Ring and front Hand guard Cap. This replaces standard Carbine and M4 Length handguards. Rock solid fit top rail is at receiver height and you have KeyMod slots along each sides and the bottom of the handguard. Includes two Accessory KeyMod to Picatinny Rail Sections. One Short (5 slot Picatinny) and one Medium (11 slot Picatinny) Length Picatinny Rail sections. They can be placed in any of the sides or bottom KeyMod slots. Black Anodized Aluminum Construction Handguard surface overall Length is 8.75". The Handguard extends past the front handguard cap and front sight post, to give you more surface area to place your hand and accessories.
Designed to fit AR15/M4s with MIL-SPEC Barrel Nut, Delta Ring and front Handguard Cap. Note modification may be necessary on non standard Barrel Nut Delta Ring Handguard Cap rifles.