Which rear tube caps work on Sheridan markers for kp style builds?

[Impactfour]

Hi guys,

Like the title says I'm looking for info on the air rifle back caps that people use in kp style builds with Sheridan bodies like the pgp. I think I've found a lead in some that are compatible with some Sheridan streak models. I've attached a photo of the one in looking at in case that helps Screenshot_20250201-191309.png

[Jordan]

That's a Bluestreak trigger group. The cap works on any K-series (or P-series, really) but the trigger will only work with a Bluestreak, or "C" hammer. It might work with a P-series hammer with modification.

You need the double-lobe trigger for a KP.

[BrickHaus]

the single lobe trigger is whats on my pgpness. itll work, you may have to file either the sear, or the cap a bit to make clearance depending on tolerances.

[Impactfour]

That sounds easy enough. If I end up pulling the trigger on this purchase I may contact you for some guidance when it comes time

[Impactfour]

Would a trigger like the one in this link be a simple swap out job to make it work with a p-series?

https://www.jgairguns.biz/c-c-78_332...r-p-13728.html

I'm debating grabbing one of these back caps for a project down the line, but it's a bit pricey so I'd prefer to keep any modifications if need to make simple and reversible

[BrickHaus]

they are spendy for sure, once you built a brass up you quickly realize why people want 600-800 dollars for built brass. That double lobe trigger wont work in a ppgp lower unless you take the second lobe off. There isnt enough travel to utilize the second lobe.... Well maybe is you have a newer stype p series hammer with the relief in it it may work, but I havent tried it.


you dont need to do a kp back cap convert to make a rifle or pirate, though they are easier to achieve. you can cut up a pgp frame, and add a micro tie rod to the trigger to relocate the trigger, then make your stock.

The how to is here is you missed it https://www.mcarterbrown.com/forum/p...nto-wood-stock

https://www.mcarterbrown.com/forum/p...ee-rifle-build

The above link is a build Walz did utilizing the p series to k series mod. It is more work, but you would need fewer high value parts.

[Impactfour]

I've read through that thread a few times, and debated it giving it a shot but already have a number of hurdles in these builds as a first timer so I figured I'd make one aspect easier.

[Impactfour]

I said screw it and ordered it, here's the link for anyone interested: https://dlairgun.com/products/trigge...-streak-models

Its definitely on pricey end, but with the CAD to USD conversion it's a price I'm willing to pay. I think I'll use this to turn my single shot pgp into a pirate pistol, and use the Blue fork trigger for the constant air build I've got planned. Now for this freezing weather to hold off so I can get to work!

Edit: I may have snagged the last one, or ordered an out of stock product, we'll see how this goes

[Cal440]

Hope you have time to post some pictures, looking forward to your build.

[Jordan]

Cal440 - I might have a spare one for you if your search comes up empty. Let me know.

[Cal440]

Thanks for the offer Jordan will let you know. Been searching for a while, I think they are becoming the holy grail for builders. Don't want you to be short one I am sure there are more cool builds in the future.

[chplnstone]

looks like the original question is answered, I had a thread on k-converting p-series that was unfortunately lost to the hack that had more detail. as people have said, the single lobe c-series is the closest to the right length as you'll find pre-made, i typically cut the hammer to fit the sear vs. the other way round (or simply make a trigger/sear to fit from scrap tool steel).

[jeramiej]

If wanting parts, I have purchased triggers from these guys. https://www.jgairguns.biz/sheridan-c-78_332/


direct to the double trigger
https://www.jgairguns.biz/c-c-78_332...r-p-13728.html

[spydrmn]

G&H Custom Works offers a custom rear block with trigger plate. RVA incorporated. It can be set up for either a K or P series Sheridan. IMG_20240815_201733226_HDR.jpg

[Impactfour]

It looks like my order did go through with the airgun website, we'll see if I can make it work when it arrives some time next week. If not then an incorporated RVA sounds pretty nice!

[Heavy_D]

Would Like info on cost on one of these beauties for a build I'm collecting parts for.

[BrickHaus]

Impactfour you can easily tap a kp plug for rva with a 1/4 28 tap.