XCR-M Extractor .308 $14.00 Note: Used for .243, .260, & 6.5 Creedmoor also. XCR-M Extractor .308 quantity Add to cart SKU: M-BT-EX308 Categories: XCR Lower Receiver Parts, XCR Parts, XCR-M Lower Receiver Parts, XCR-M Parts Description Description Note: Used for .243, .260, & 6.5 Creedmoor also.