minimag won't fire... with video.

[Boltaction]

now that you mention it my rail bushing is MIA. i di'nt think that would cause any issues though. .. would it?

[Boltaction]

full HP tank at 4000 psi with 800 psi oulet and this POS still wont work. trigger just sits limp, half charged. crank up the velocity and it just leaks out the back.

had about enough. could this be caused by lack of a rail bushing?

[Boltaction]

OK, slight revelation. the space between the gun body and the valve looked a little wide so i gassed it up with co2 and while it was gassed I pushed the body and the valve together and it stopped leaking down the barrel and would shoot every 3rd or 4th shot. unfortuntley, i think i got liquid in the sysytem so im letting it all dry out now. also replaced another bottom powertube O-ring.

So maybe the rail bushing is the root of the problem. not getting the valve to sit far enough forward for the sear to hit the on/off. it only makes sense.

soooo, im gonna need to come up with some sort of replacement rail bushing by tomarrow if i wanna even have a chance at using this mag. could someone please get me the dimensions of the rail bushing so i can try and find a temporary replacement at the depot?? or if anyone has any other ideas that would be great too. thanks.

-SW

[XM15]

The rail bushing is .250 (1/4") outside diameter and .200 inside diameter.

[BigTrucker]

ThIs a long shot but maybe the feild strip screw is too tight?? Just snug it up with your fingers. I've used a mag without a rail bushing before. It's not that big of a dea, it just holds the frame to the rail when you take out the valve.

[athomas]

The rail bushing is critical to the position of the valve in the body. Without it, the valve moves back during use and causes a leak out the front as experienced. It also changes sear position with respect to the on-off, which is the timing. It is the timing that causes the cough and misfiring.

[Boltaction]

thank athomas, thats what i was suspecting. i'm ordering the shim from AGD along with some other stuff so i can have two working mags. thanks everyone for helping me trouble shoot this.

ill post one last video once i get it going.

-SW