Answer

I have not had the privilege of disassembling and working on one of these firearms. BUT that doesn’t matter; all of the rules apply to this as any other trigger job. Smooth and polish all the rough parts that rub against one another maintaining the critical angles etc. Since you have completed the AGI courses this should not prove difficult

Question:

I’ve had 2 calls in the last 3 weeks on these guns, (Gamo Varmint Hunter). I told the customers to send them to Gamo as they are under warranty. People don’t like to have to send their gun some where. The same problem with both guns. They get them sighted in and they won’t stay sighted in. They have scopes lasers and lights on these things. When they go off they seem to go back to the same place. Does any one have any experience with these guns? Why didn’t we cover air guns in the course? Gregg

 Answer:

HI, I have not worked on this particular rifle but I have worked on several Air guns. I totally rebuilt a FWB 300s, some Chinese air guns & a couple others. I can make a couple of guesses.

“Spring Piston” air guns have a “double recoil” & can shake scopes to death. I have been told by several people that they mounted regular scopes on “springers” & the scoped failed in a short time.

I mounted a cheap red dot ‘Halo” sights on a couple of air guns. One is a Chinese & the other RWS 5g pistol with a skeleton shoulder stock.

The sight adjustments are crude at best & get shaken off in a few shots. I guess lock tight and or trying to stake the threads might help. These are my guns & I did this intentionally to see what would happen.

The only lasers & lights I have noticed advertised with the air guns seem to be inexpensive. I would guess that these would react like the junk unit I used.

There is a little block available that is mounted to the scope rail next to the rings. This is to aid in keeping the scope in place. I haven’t tried one.

I wonder if remounting the sight systems, lapping the rings , etc might help.

If you need to disassemble the gun you’ll need a spring compressor. If you Google it you’ll find some plans for home made model.

Lastly I wonder if the seals are bad. It’s possible that if the seals are bad the zero would shift around. Hope that helps

Reply:

Thanks for the input. As these rifles are package deals and are under warranty. It will be interesting to see what the factory tells the customers when they get them back.