KNIGHTS ARMAMENT SR-15 16 UPPER NO FURTHER A MYSTERY

Two pushbutton (aka QD or snap-in) sling swivel attachments came Using the SR-15E3 and there are actually ambidextrous holes to snap them into within the SOPMOD buttstock and at three areas on all sides on the upper and reduced receivers.The MAMS Brake is built to diffuse large-strain muzzle gases, which serves to enhance the rifle's accuracy oppor