Diamondhead’s VRS™ 7″ Modular, Two Piece Drop-In Handguard offers fore-end versatility for the AR15/M16/M4. It install quickly and offers almost limitless configurations for accessories. The VRS™ (Versa Rail System) is of combat durable Mil. Spec. Type III anodized 6061 T6 aluminum construction and fits all M4/AR15/M16 variants. Rails are Mil. Std. 1913 Picatinny rail dimension, and you can mix full length & short rails with bumpers. This handguard set mounts directly to your rifle’s existing handguard cap and Delta ring – just like standard handguards. NOTE: The VRS-DI is not recommended as an optics or sight platform. Made in USA by Diamondhead.