AC-Unity Handguard fits all HK33 carbines and clones. Made by AC-Unity of Bosnia from advanced polymer-resin/granulate that is light weight, shock and UV resistant.
It also fits the G3K and PTR91 rifles using longer HK93 handguards and cocking tubes. Superior ergonomics and simple, drop-in installation make this the best HK pattern rail on the market
It is one-piece design made of 6061 aluminium with steel mounting hardware and the finish is black hard anodized.