size

[k.boots]

hi , going to buy a set of hex keys am I right that the crosman will be metric

[CraigH]

The machine screws on 13XX and 22XX family air pistols are SAE threads.

[Multigunner]

The tiny hex head of the breech/receiver mounting screw is not found in most of the cheaper hex wrench sets. Be sure to look for it before you buy.

Also I found that the small ball head hex wrench doesn't work well at all, the head of the breech screw is too shallow, I had to grind the ball tip off before it would grip well enough to turn the screw.

If you plan to do much work on these order a slot head breech screw.

[k.boots]

thanks , for your quick response  I will get a couple o the slot head screw regards "ken

[rangerfredbob]

I've always had good results using a T05 Torx bit on the breech screw without doing the flat head screw thing... I have this thing against slotted screws, they are a last resort...

[k.boots]

bought my self a good set which fit  all  thanks. 'ken