AR-STONER Magazine Rebuild Kit For AR-15 223 Remington, 5.56x45mm, 300 AAC Blackout 30-Round Aluminum Package of 3

AR-STONER Magazine Rebuild Kits keep your 30 round AR-15 (223 Remington, 5.56x45mm, 300 AAC Blackout) magazines in tip-top shape. This kit is handy when your old mag springs are worn and need replacing or if the follower in your magazine no longer activates the bolt catch. Designed to replace the internal parts of an aluminum USGI magazine, these springs and followers are useful to keep your pre-ban, normal capacity AR-15 magazines operating at their full potential.