The Galil® ACE Stabilizing Brace is produced for IWI US Inc. by SB Tactical LLC designers and manufactures of the original SB15 and SB47 Pistol Stabilizing Braces. Originally designed as a means for persons with a limited mobility to operate and fire the AR-15 pistol the custom adaption of the Stabilizing Brace to the Galil® ACE takes the application of large frame pistol control and stabilization to a new level. With the brace in the folded position storage space required in your safe or range bag is minimized. - For GAP39 II and GAP51 - To remove the body back cover: use a 4 mm punch to remove the pin or pins. To attach brace: use a 3/16 roll pin punch and a hammer to gently tap one or two roll pins in. You may find it easier to crush the end of the roll pin before inserting it. - For GAP556 - To remove the body back cover: use a 4 mm punch to remove a pin from both sides of the bottom hole on the bottom back cover and use a 4 mm punch to remove the pin from the top hole. To attach the brace: use a 3/16roll pin punch and a hammer to gently tap a roll pin in the top hole and a roll pin in the bottom hole. You may find it easier to crush the end of the roll pin before inserting it. - Includes: - Attached hinge hardware - Adjustable nylon strap - Two roll pins - Hinge components made in Israel stabilizing brace made in the USA