When purchasing Daniel Defense or any other brand from eGoods365.com store, you can be sure that (a) you are purchasing from US based company with the most responsive and friendly customer service; (b) an authentic, not a counterfeit and not a refurbished product.

The RIS II is a specially designed machined aluminum multi-rail handguard for the SOCOM M4A1 carbine. It enables the installation of an M203 40mm grenade launcher while also allowing the barrel to free float. The M203 attachment does not require any special tools or extra parts and is located on the bottom rail. Full-length MIL-STD 1913 Picatinny rails are included for the addition of mission-specific accessories. The top rail is continuously mated with the receiver rail and all models come with instructions, mounting hardware, and three snap-on rail covers made of molded polymer. The FSP RIS II models have a cutout in the top rail that allows retention of the A2 gas block/front sight tower in carbine-length gas systems. The Mk 18 RIS II is designed specifically for the M4A1 carbine with the Mk18 CQBR (Close Quarters Battle Receiver) upper receiver and 10.3” barrel. It provides an expanded accessory mounting area while deleting the M203 mounting capability and requires a low-profile gas block.