“NEW” MBX 'ULTRA MAX' SPRING & FOLLOWER SETS FOR SIG 320
- 24 ROUNDS WITH 140 EXTENSIONS
- 23 ROUNDS WITH FACTORY BASEPAD
IMPROVE YOUR EXTENDED 140 FACTORY MAGAZINE PERFORMANCE WITH MBX “NEW” MBX 'ULTRA MAX' SPRING & FOLLOWER SET FOR FACTORY SIG 320 MAGAZINE
10.5-11 coil for 24 rds in 141.25 magazine
VERY IMPORTANT
New MBX competition follower & spring sets need to be loaded 4-6 times to capacity preventing follower popping out when new , insuring spring set and the follower sits down in tube when new, this avoids any slide contact and damange to spring and follower voiding warranty as the competition follower is NOT held down by the slide stop and has minimal surface area , the competition follower is designed once spring is set to sit 1/4-3/8 below top of feed lips thus avoiding damaging slide contact with follower once magazine is empty .
Currently 2 followers with letters on top
Currently 2 springs round base coil and Square base coil
3 combinations/3 groups available listed
Follower markings on top are
1 UM
2 UMG
Group 1
UM follower round bottom spring 10.5
Cz small and large frame 9 mm
Cz P10 & DWX Dan Wesson 9 mm
S&W / M&P 9 mm
Walter 9 mm
Beretta 9 mm
Springfield XD and XDM 9 mm
Group 2 SIG
UM follower / Square bottom 11 coil
Sig 320
Group 3 GLOCK
UMG follower
Square 11 coil sprin
