- Location
- East ontario
Mossberg 990 Magazine Extension Canadian Legal +
Canadian Legal +1. This tube fits flush in appearance and installation. The Canadian Legal tube has been plugged to comply with Canadian law.
Canadian law mandates that semi-automatic shotgun capacity is restricted to 5 rounds of the largest capable shotshell for that shotgun. The Mossberg 990 is designed for 2 3/4" inch shells and 3" shells. So, the legal limit is 5 rounds of 3" shells. Our Canadian Legal magazine extension tube will allow you to load 6 rounds of 2 3/4" shells into your magazine tube, as per Canadian law.
CNC machined from 4140 steel.
Overall length - 4.75 inches
Once installed, these tubes will fit flush against the end of an 18.5″-barreled Mossberg 990 12-gauge shotgun.
The finished product will be Cerakoted in Graphite Black
Comes with:
3 Position Sling Plate
https://sjhardware.com/mossberg-990-magazine-extension-canadian-legal-1/
C Clip (to install sling plate)
Canadian Legal +1. This tube fits flush in appearance and installation. The Canadian Legal tube has been plugged to comply with Canadian law.
Canadian law mandates that semi-automatic shotgun capacity is restricted to 5 rounds of the largest capable shotshell for that shotgun. The Mossberg 990 is designed for 2 3/4" inch shells and 3" shells. So, the legal limit is 5 rounds of 3" shells. Our Canadian Legal magazine extension tube will allow you to load 6 rounds of 2 3/4" shells into your magazine tube, as per Canadian law.
CNC machined from 4140 steel.
Overall length - 4.75 inches
Once installed, these tubes will fit flush against the end of an 18.5″-barreled Mossberg 990 12-gauge shotgun.
The finished product will be Cerakoted in Graphite Black
Comes with:
3 Position Sling Plate
https://sjhardware.com/mossberg-990-magazine-extension-canadian-legal-1/
C Clip (to install sling plate)


















































