View Full Version : WTS: LMT/Crane AR15 Extractor O-rings

12-28-2011, 3:31 PM
I'm selling brand new LMT extractor O-rings. These are the same O-rings that NSWC Crane uses in the Mk18/CQBR weapon systems. The benefit is increased extractor tension for positive case extraction.

If your extractor is using the old 4 coil extractor spring and blue insert, the O-ring would definitely be a reliability upgrade over your existing setup.

Newer carbines using the 5 coil spring and black insert can still benefit from installing this O-ring.


Five pack of O-rings for $6 shipped.