EAA 612 Tac tube extension

[E4mafia]

Anyone know if you can increase capacity on these and with what exactly?
Akkar Churchill 612 Pump | EAA Corp Main

There is very little on the web about these other than they seem ok enough for what they are and that there is 0 aftermarket which is why I am asking if anyone knows if you could harvest parts from something else to fit these.



Thanks!

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[Eng]

I believe rem 870 extensions work.. I would check the threads of an 870 cap and see if that works. if so you may need to remove a dimple or crown at the end of the tube under the cap to allow the follower and shells to pass through.