Platform | Mk4 |
Caliber | .300 BLK, .350 Legend, 5.56x45mm, 6.5 Grendel, 6mm ARC |
![](https://cdn11.bigcommerce.com/s-7ngaea0tdq/products/1089/images/768/55BA41C__66548.1715280415.1280.1280.jpg?c=1)
![](https://cdn11.bigcommerce.com/s-7ngaea0tdq/products/1089/images/4809/DSC_4586__00411.1715280415.1280.1280.jpg?c=1)
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Firing Pin, AR15
CMMG Firing Pin, AR-15. For .223 Rem/5.56mm, 300BLK bolts.