Increase the capacity of your SHS STP12 Straightpull Shotgun with the Ignition Custom Engineering SHS magazine extension.

Options to increase by +2 additional shots or +5 additional shots.

No permanent modifications required to the shotgun. 

Instructions provided (requires some disassembly of shotgun). 

Ausralian made. Manufactured by the gunsmiths at our Adelaide workshop.

Kit Includes:

  • Magazine Extension Tube +2 or +5 capacity (finished in hard wearing Cerakote)
  • 10 Shot Magazine Spring (+5 kit only)
  • Ultralite Barrel Clamp
  • SHS Hex Magazine Nut
  • Instructions 

Which Kit Is Best For Me?

20" barrel SHS: we recommend using the +2 kit on a 20" barrel model as the extension will be roughly the same length as the barrel muzzle.

28" barrel SHS: You can use the +2 kit or the +5 Kit (the +5 extension will be roughly the same length as the barrel muzzle).

(ICE_SHS_EXT)

SKU ICE_SHS_EXT
Brand Ignition Custom Engineering