GEM Air Rifle

[DCL_dave]

Has anyone got any experience of how to strip and clean a GEM air rifle? I would really love to hear from anyone who has.

I acquired one recently, and it shoots - which is a start. I unscrewed the stock, and removed the spring, which is a bit knackered, but still all there. I could not remove the piston however not sure how this is done.

After shooting around 20 pellets, the rifle did something quite disturbing... it began to snap shut when cocked. Not all the time.

I will post some pics when I get time, but would love to talk to anyone who knows these rifles.

Best regards to all

Will

Hi Will,

Failure to cock in an old Gem pattern is usually down to wear in the sear or the piston groove, or a bent cocking link and/or pins (trigger guard buckles in on itself from years of compression)

You will need a straight pin punch of the correct size to remove the cocking link from the barrel by knocking out the front pin in the breech block and withdrawing the cocking link backwards out of its cocking slot in the the comp tube - the cocking link will likely have a cocking shoe pinned to the end that rides in two milled slots in comp tube. The piston will pull out with the cocking link, note or better still take a picture of it to aide you in putting it back together.

Have a look on Danny's excellent site for (hopefully) more info about your Gem pattern - https://forum.vintageairgunsgallery....-airguns-talk/

EDIT: Forgot to say that you will have to either pull the trigger to ease the piston past the sear or just remove the sear but watch out for the little spring underneath it (sear pin is the rear pin nearest the stock in the trigger group)

HTH,
Dave