MBX IS NOW TAKING YOUR FACTORY SIG 320 MAGAZINES TO THE HIGHEST LEVEL OF PERFORMANCE & INCREASED CAPACITY
****** Note This Product will not lock slide back on last round fired ******
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“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
HENNING 140 EXTENDED BASEPAD FOR FACTORY SIG 320 TUBE
