The M33 handguard provides 2 mounting rails, complete with thermal rubberrail covers and heat shields. No tools or gunsmithing required forinstallation. M44L 4 sided rail system includes 2 vented and 2 non ventedrail covers. No gunsmithing required, handguards mounts just like factory handguards. M44S 4 sided rail system fits carbine type rifles and includesthermal rail covers.
