Crosman Crosman 1322 and m4-177

[Rayan51]

I have a question about something I'm thinking about doing. I currently have a Crosman 1322, and I ordered the flat top piston and valve to get more fps with fewer bombs, but I was wanting to go further. I was reading comments about someone recommending putting the Crosman m4-177 tube on the Crosman 1322, but without further details.
Getting straight to the point, I want to try putting her tube in my Crosman 1322, in theory I would need fewer pumps to get more fps, but my question is, if they are compatible, and if it would be worth it on the flat top valve or would it be better on a RP valve?

 

[marflow 777]

so, anytime you have an idea you need to go and look at the parts diagrams and in this case that would be at Crosman
the biggest problem i see is how you would use the 1322 grip frame with the M4 tube and that would be just the start
you would be trying to make a new gun out of parts and then make all the parts you need to merry from those two guns
and then everything that would not work you would have to make and the R&D work after that
the bottom line is, it would madness to try

 

[daddypaddy]

madness is his middle name.

 

[Rayan51]

so, anytime you have an idea you need to go and look at the parts diagrams and in this case that would be at Crosman
the biggest problem i see is how you would use the 1322 grip frame with the M4 tube and that would be just the start
you would be trying to make a new gun out of parts and then make all the parts you need to merry from those two guns
and then everything that would not work you would have to make and the R&D work after that
the bottom line is, it would madness to try

I ended up giving up on the idea, it really isn't worth it, the 1322 would no longer be a 1322, besides it would be a lot of work and there would still be a chance of it not working out.

 

[Rayan51]

madness is his middle name.

I agree haha

 

[sscoyote]

sorry just read this and it really was funny

 

[JBHC]

I have the 1322.

Mine is completely stock. It's fun.

If I mod anything I just want more speed.

 

[daddypaddy]

I have the 1322.

Mine is completely stock. It's fun.

If I mod anything I just want more speed.

i only have the buckrail moderator on it and a steel breech. still fun though. my notos took up all my modding attention when i got it. i might have to revisit the 1322 to add power. i’d like to have a higher power pumper.

 

[airgunner53]

Start with the valve in the tube and mount the breech using the transfer port to align it than mark your 4-48 screw hole and rear breech hole. Drill and tap your 4-48 hole and drill your two rear cap holes at the same time granted you have aligned it properly. Cut excess rear tube to be the same length as the rear as a1322. Once you you have your top end and rear cap on mount your grip and mark the front grip/valve screw hole. Yes, it's a bit of work but worth the effort.

This is with 15.49 pellets before I finished the last few mods to the valve and have not chronied it yet and it hits harder now. Easier to pump and faster to get there.
Also need to extend the hammer pin slot.

 

[daddypaddy]

Start with the valve in the tube and mount the breech using the transfer port to align it than mark your 4-48 screw hole and rear breech hole. Drill and tap your 4-48 hole and drill your two rear cap holes at the same time granted you have aligned it properly. Cut excess rear tube to be the same length as the rear as a1322. Once you you have your top end and rear cap on mount your grip and mark the front grip/valve screw hole. Yes, it's a bit of work but worth the effort. View attachment 498104View attachment 498111
This is with 15.49 pellets before I finished the last few mods to the valve and have not chronic yet and it hits harder now. Easier to pump and faster to get there.

what bipod is that and where can i get it? you have a very clean looking build there

 

[airgunner53]

what bipod is that and where can i get it? you have a very clean looking build there

Just a 2 piece side mounted bipod. The scope is the key for the mount.

 

[Sawney Bean]

I'm imagining the stability of that bipod if you were to combihe it with a second conventionally mounted bipod. It would be like a folding table and you wouldn't even need a shoulder stock. It would probably work best on a different gun though.

 

[airgunner53]

I've wielded it as a pistol with stock and scope stripped of and it's manageable. The complete build is HEAVY including the more recent added full size ldc and the only thing plastic is the safety, the grips and the forearm. Taking off the bipod makes it more manageable in weight.
This will be a full magnum pistol soon with all the carbine parts moving to a 2100 tube.

 

[airgunner53]

I have a question about something I'm thinking about doing. I currently have a Crosman 1322, and I ordered the flat top piston and valve to get more fps with fewer bombs, but I was wanting to go further. I was reading comments about someone recommending putting the Crosman m4-177 tube on the Crosman 1322, but without further details.
Getting straight to the point, I want to try putting her tube in my Crosman 1322, in theory I would need fewer pumps to get more fps, but my question is, if they are compatible, and if it would be worth it on the flat top valve or would it be better on a RP valve?

Add a pin to the inlet hole to remove head space. A little bit of volume goes a long way along with a larger transfer port and matching barrel transfer hole. 16 pumps with a pump cup with the previously stated mods and 15.49 pellets. Flat top will do much better and with less pumps.

 

[Rayan51]

Comece com a válvula no tubo e monte a culatra usando a porta de transferência para alinhá-la, depois marque o furo do parafuso 4-48 e o furo da culatra traseira. Fure e rosqueie o furo 4-48 e fure os dois furos da tampa traseira ao mesmo tempo, desde que você tenha alinhado corretamente. Corte o excesso do tubo traseiro para ter o mesmo comprimento da traseira como a1322. Depois de ter sua extremidade superior e a tampa traseira montadas, monte sua empunhadura e marque o furo do parafuso da empunhadura/válvula frontal. Sim, dá um pouco de trabalho, mas vale a pena o esforço. View attachment 498104View attachment 498111
Isso é com 15,49 pellets antes de eu terminar as últimas modificações na válvula e ainda não terminei de cronometrar e agora bate mais forte. Mais fácil de bombear e mais rápido de chegar lá.
Também é preciso estender o slot do pino do martelo.

Uau. Sua arma virou um verdadeiro chefe. Mas acabei desistindo de continuar com minha ideia, infelizmente não tenho engenhosidade para modificar nada. Sua arma é muito legal!