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New AR-9 80% Lower Receiver 9 MM for the AR-9 (9 MM AR-15). ..............
Its features include:.......
-Accepts Glock magazines.......
-Threaded bolt catch hole......
-Threaded hole for upper receiver tension adjustment.......
-Mil-spec part compatibility ensures maximum rifle customization.......
-Withstands the harshest punishment from any situation using ultra-tough design, precision machined from aircraft-grade billet aluminum for superior strength........
-Rear take down lug pocket completed* (Requires 9mm upper and 9mm bolt carrier group, both available here.)
-Includes magazine release........