Sherwood, I've been looking for a full length magazine tube for my M4. Where did you get yours??? I don't want to accept a mag extention for my black beauty. Let me know k? Thanks!
I looked on there web page and couldn't get any clarification.
Suggestion...call the customer svs and ask. They will explain the difference.
This is the cust. svs. number for Brownell's.
1-800-741-0015
I ordered a cyl choke from Brownells on the web. It was black and a Benelli Factory part.
Stock Number #301-000-232 Choke Tube 2G Flush Cylinder $34.30
Made a big difference in shooting clays. They said it is a good all around choke for slugs, steel shot, lead shot etc.
Hope that helps.