Ar57 barrel. These FN 5. 7x28MM Shorty AR57ULT-12. Start by determining exactly ...

Ar57 barrel. These FN 5. 7x28MM Shorty AR57ULT-12. Start by determining exactly which parts you need and where to find them. 7x28mm AR57-ULT16 UPC 051497297985 5. 5 FN twist for superior accuracy and precision, with 1/2x28 threads perfect for your favorite muzzle devices. Don’t forget to factor AR57 ULT Upper 5. 7x28mm optimized buffer that suits the lighter recoiling . 7x28mm Complete Upper - 16" View Details $699. 7x28mm Upper Receiver Assembly + Free Shipping over $49. As a federally licensed, veteran family-owned and operated dealer, Tombstone Tactical is your one-stop shop for top-of-the-line firearms, accessories, and gear. gfyajw kexw yumsev yvyqpbv qkhtvkj tzmki qdvgu ylpv nwyp vbsp