Palmetto State Amory is proud to add another caliber to the Modern Sporting Rifle repertoire, the 10mm. The New Frontier Armory 10mm barrel is compatible with the AR-15 upper and most internal components; you will only need a .40/10mm BCG to add this powerful caliber to your personal collection.

For the best selection of Modern Sporting Rifle parts and accessories, shop Palmetto State Armory!

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