renegadecow Posted July 19, 2021 Report Share Posted July 19, 2021 17 hours ago, Dimitri MdP said: what is "a WA style expansion chamber"? Western Arms' old M4 mags. Had a series of chambers making it possible to shoot even upside down without spewing liquid. Link to post Share on other sites
Recommended Posts
Archived
This topic is now archived and is closed to further replies.