XCR Lower Receiver Parts Showing 33–41 of 41 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low XCR-M Bolt Carrier O Ring Type 2 $1.00 XCR-M Bolt Carrier Pin Type 2 $5.00 XCR-M Bolt Carrier Type 2 $100.00 XCR-M Carrier Tail $15.00 XCR-M Extractor .308 $14.00 XCR-M Firing Pin Type 2 $17.00 XCR-M Lower Receiver Semi-Auto Type 2 $400.00 XCR-M Main Pin $5.00 XCR-M Recoil Buffer Type 2 $9.00 ← 1 2 3