MBX 'ULTRA MAX' SPRING & FOLLOWER SET FOR Beretta

Other products by MBX Extreme
  • Item #:  Z-SPF-UMBC
Reg. Price: $19.95
Our Price: $19.95
The product is currently out of stock.

BERETTA 92 SERIES 9MM MAGAZINES

- 24 ROUNDS WITH 140 EXTENSIONS


IMPROVE YOUR EXTENDED 140 FACTORY MAGAZINE PERFORMANCE WITH MBX “NEW” MBX 'ULTRA MAX' SPRING & FOLLOWER SET FOR FACTORY Beretta MAGAZINE

MBX Ultra Max spring & follower compatibly  chart and Installation instructions 

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


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