One day I was just pumping it up them bam! The rubber bladder blew up. So I caved out the insides of it and shoved in a 2in pvc pipe in to it. Panted it ultra flat black.
It will fit...barely
Getting a rubber grommet that size was a pain to find.
It kept wanting to push out, so some welding wire fixed it.
Ok I got a Vulcan, I took half the gun apart " the business end" to remove the AR, did it put it back together it will shoot, but 2 rounds out of 6 that i put in it . It seems like the timing is off,I noticed the outer plunger wont side right it seems stuck, I don't know why???