XCR-L Extractor 5.56 $12.00 XCR-L Extractor 5.56 (Note: Used for .300 BLK also.) XCR-L Extractor 5.56 quantity Add to cart SKU: L-BT-EX556 Categories: XCR Bolt Carrier Parts, XCR Parts, XCR-L Parts Description Description XCR-L Extractor 5.56 (Note: Used for .300 BLK also.)