Brownells AR-15 M16 AR15 Extractor O-RING Improves Extraction
Tiny, high-stress synthetic rubber donut ring slips around the extractor spring to increase extractor tension for more reliable extraction. Eliminates spring "chatter" to prevent malfunctions caused by the extractor slipping off the cartridge rim. Helps ensure positive, consistent extraction during rapid-fire sequences. Must have cheap preventative fix for ammo feed jams! MADE IN USA