Replacement XB Follower Spring Set For MBX BUL Magazines Only.
NOT for BUL Factory Magazines but We do offer MBX Spring Follower Sets for Factory Tubes Click Here
"NEW" XB Competition Follower Spring ~ Making Performance & Higher Capacity Achievable
NOT for BUL Factory Magazines but We do offer MBX Spring Follower Sets for Factory Tubes Click Here
"NEW" XB Competition Follower Spring ~ Making Performance & Higher Capacity Achievable
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