Canadian Airgun Forum

Well I want to start a new build and I have some spare parts from a few 2240 and
would like a single pump air pistol that I can use some of the parts from the 2240
like grips trigger barrel and bands whats the number 1377?
I know some guys mod them with flat top pistons and so on.

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Custom Design by ME PCP/HPA Air Carbine 10-50X60 Scope My 2018 FT Open

Yes, you are right. If you want a 22 cal same, you might mean the 1322.

Actually I am thinking about it too. I want to start with the kit (included the shoulder stock), Amazon.ca is selling at 109 free shipping something...

As I have my scope, so I am thinking to order the intermount as well. And I will see if I can fit my scope (not a small one, is a 3-9x40, I measure the size if it's fit, actually the scope will be as long as the gun without the stock...). If it fits okay, I will then buy the steel breech... then a longer 14' barrel for a better look~ Then I will stop there... But it will be step by step~ I am not very handy at the show-off guys on moding this gun, so I won't go too far on it...

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~Plinkers~
FX-M3-22 Compact#PP700-Carbine#Diana48-177#XS28M-25@26fpe#HW45 Beast#AW-Custom Z-Killer DE
~Competitors~
FWB300SU#Tau-7#IZH-46M#FWB-65#CP88-C
~Target~
HW 30s/35e/97k/40+Extender/P3+Scope/70#CZ200s Laminated@10fpe#AA ProSport-177@12fpe

You're in for quite a journey man! I extensively modified a 1377 to a single stroke pumper, and the highest fps I got was 335 with 7.4 gr. pellets. I had to make a new flat top valve, a flat top piston and a new TP, I used an M4-177 pump tube (longer stroke) and shortened and re-drilled it to be able to fit the 1377 grip and spring/hammer. I'm not done yet, but the project is on the back burner right now. I think I'll have to re-design the valve and piston/pump lever assembly. Ah, and I used a 12'' barrel.

The barrel band from the 2240 will not fit a 13xx tube, because the 2240 tube is 7/8'' nominal OD and the 13xx guns are 3/4'', but the grip and trigger will fit. I'd suggest using a longer barrel than the stock 7 1/2'' 2240 barrel. Also the stock 2240 tube would be too short to make an efficient pump tube, but maybe a 2260 or Discovery tube would work. I think Bob Sterne made a pumper rifle with a Disco tube.

Anyway, the best of luck to you Frank!

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If everything's so lovely yeah, then why don't I, why don't I, why don't I, why don't I feel lovely?

The chamber of 1377/1322 is too small to be effective at single pump - no matter how you mod the piston and valve assembly.
The true single pump pistols have chambers of 40-60cc, (hw40 and p17 - 40cc, 46M - 50cc).
The volume is the main limiting factor of a single pump pistols which defines muzzle energy.
With 1377/22 even for plinking at short range you will need at least 3 pumps because of small pump volume. At least without some major changes to construction, like mentioned above

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Rifles: Horhe Jager .22 (LW barrel, 4500psi tube), Mp-512, Mp-60
Pistols: 46M, Zoraki HP-01 ultra, 2240, baikal drozd.