The Bannar 556 1/2x28 is a stand-alone hybrid comp/brake/flash hider that drastically reduces recoil controls the muzzle and mitigates flash. The geometry of the ports redirects gasses away from the shooter and bystanders. This is NOT a QD suppressor or blast deflector mount. - Muzzle device length is 2.3 and length added to barrel is 1.7 inches - Muzzle device weight is 2.3 oz