Glad you like it Chet. When I bought that gun it came with the slotted breech plug but no wrench. Luckily, I had a wrench from an lk-93 that worked. I later bought the hex head breech plug that I included with the gun, I always used the wrench from my disc extreme or a 1/4 inch drive socket. If you pull the trigger back your disc extreme wrench ought to work I think.
Art