Umarex H&K MP5K problems

[young-gun]

I have a Umarex H&K MP5K bb gun every time I put c02 in the gun it leaks out threw the gun before I shoot a full mag. can anyone tell me what to look for when I take it a part. thanks

 

[Grove]

A damaged rubber O-ring should be the only part faulting on the air gun.

I am unfamiliar with the layout of the internals of that gun but follow from where you insert the Co2 cylinder to the chamber and inspect all areas for gaps or damage.

Hope that helps a bit.

 

[Polyshot]

http://www.airgunforum.ca/forums/

You should get more advices from there but like Grove said it should be the O-ring that have problem....

 

[dizzy]

O ring. And don't forget that drop of lube on the end of the canister when you replace them. Instructions call for it. In fact try it and see if it still leaks.