40mm Grenades not releasing all their gas properly

[CzechMeOut]

I have a couple of ASG 40mm shower shells that both aren't releasing their gas fully in one go, as the video shows.

 

They did used to work (over a year ago probably) and I've tested on a couple of different launchers along with making the firing pins way longer than they need to be.

 

I'm assuming being left in a box with no maintenance has possibly caused some lubricant to gunk up? I've looked around but I can't find any info on this problem, just gas leaks.

 

Before I take them apart, has anyone ran into this problem before?

 

Thanks!

[DanBow]

Ive no idea but my first thought is a sticky valve. I reckon a strip, clean and oil will sort it. 

[Cannonfodder]

As above. Most issues with 40mm grenades can be sorted this way

[CzechMeOut]

Hello,

 

So I seem to have solved this. I had everything greased up but after stripping, cleaning everything off and only greasing the 2 o-rings on the plunger (that also holds the ball bearings) the grenades are now firing with a big singular bang!