This is an high quality precision machined aluminum rail interface system as featured on our top-of-the-line K-Series ELITE marker. Features four picatinny rails to mount a variety of standard accessories including laser sights, flashlights, vertical grips or rail covers. This RIS handguard comes standard with a 12" fluted ported rifled bull barrel for improved accuracy. Compatible with MILSIG K-Series and Tippman A5 (all markers that accept the Tippmann A5 barrel thread).