Shotgun Breaching Adapter

[Kano]

I would like to get a breaching device installed on my Grizz. I would like one that will add at least 1.5inch to the OAL. Where can I get one like this and who can install it(It would be really convienient if these were the the same).

 

[CNADNSL8-5]

Casey at tacord has a good reputation.

http://www.tacord.com/firearmparts.htm