Arrived Yesterday

[Methuselah]

Going to have to learn the trigger. Where I did my part a dime covered those seven. Three circled I had jerked the trigger. Pull is much lighter than most of my guns.

First cartridge hissed for a while at the piercing cap. 2nd one didn't. I've got a gasket reseal kit ordered off ebay.

[Agate47]

Steve,

Best of luck with your new Mk I. I have a Mk II that my older brother bought in 1968. It has been a lot of fun to shoot and work on.

Enjoy,

Steve “too”

[Mzq284]

You can adjust the trigger down to ounces. It only improves the high setting,  but it's a great trigger. Those were premium guns, I enjoy mine. I don't remember exactly how, but there's an Allen screw by the trigger. Iirc, you c0ck it on high and turn the screw in until the trigger releases the hammer. Back the screw off a half turn or a little more. You'll know when you fire it. Obviously, adjust it without CO2 in the gun and point it in a safe direction. If yours has screw in front of the pistol, it's a hammer adjustment screw, you ca adjust velocity with it. It's a pretty handy feature.
Have fun and keep us posted!

[Tater]

Oh man, I had one of those as kid. Wish I still had it. Looking at your pics brings back memories.

[threesuns]

I received my MK II this summer - couple drops of oil on the end cap and first couple carts and still holding strong. I like the pistol more than I thought I would.

Congrats and enjoy!

[bantam5s]

I've been interested in getting one for awhile,  but I could never find one cheap enough to be worth it including a rebuild kit and a set of aftermarket grips that aren't rong handed.


You sure got a nice example there, congrats.

[Methuselah]

Thanks David

It sat a couple days and I know it should have been full fps, but had obviously leaked down.

I'm just going to wait for that o-ring kit to show up. Should be soon.

Before installing I'll compare against my kits and measure what come out, goes in, and matchups. Hopefully I'll have everything on hand for next time and be able to post equivalents.

I don't have anything metric,  but we'll see...

[Methuselah]

I've been interested in getting one for awhile,  but I could never find one cheap enough to be worth it including a rebuild kit and a set of aftermarket grips that aren't rong handed.

I kept buying bargains and low end stuff (or WallyWorld closeouts) until recently. Now I'm retired but went back to work and realizing my best bet is what used to be higher end because it's probably repairable.

I think I'll be able to get this old girl shooting, and in the end it may be cheaper than buying the kind of stuff I did in the past (like my Hatsan 125 that was junk when it was brand new).

Happy New Year David!

[Methuselah]

Well darn

Got the "kit". Three bags of o-rings, some duplicates, a few sizes that puzzle me.

As to my kits, the big one buna-n shore 70 and the other nitrile. Big one had cross ref to sizes matching a posting (article) by Tom Gaylord but missing the smallest. Half didn't match between kits. Some from Ebay didn't match anything I have.

I'll post some pics.

The gun refirb looks complicated, especially where the valve is concerned. Tom's article said there were online vids (?) of rebuilding the poppet seal. I couldn't find any - and would like to try it on a 760 valve poppet too.

The good news is mine is likely leaking from the CO2 cap, and that o-ring did seem to have a close match in my nitrile (HFS) kit.

2nd Mark II showed up today. Ser# begins 82037. Presume 1982. The box of 5 CO2 cartridges had 3 missing, it looks like that's all the use the gun had seen. Maybe that's just wishful thinking...

[Methuselah]

You saw what I ordered at the beginning of this thread, so here's what I received (and notes from the article on sizes)

I'm still undecided if I'll tear it down or start with just the CO2 cap and see if it stops leaking down. It's going to be hard waiting, it's begging me to do some shooting 

[Methuselah]

Three hours, somewhat of a wrestling match at times, and that was just the CO2 cap.

I'll post some pics and caliper measurements later, but for now one shot, about 480 fps cr ptd hunter and now I wait as long as I can ignore the Mark II begging me to shoot it 

I left some surface rust on the outside  ... I  didn't want to wait a week or two to soak it in oil because that's the dinner table and I wanted it cleaned up before my better half got home.

[threesuns]

Three hours, somewhat of a wrestling match at times, and that was just the CO2 cap…that's the dinner table and I wanted it cleaned up before my better half got home.

I can relate to that 😅 !

[Methuselah]

Still holding pressure, looks like I may not have to dissassemble it to change valve seals.

I hope I still have the notes on measurements but maybe it's pointless, the article on resealing these already listed sizes.