Crosman Nightstalker (NS1200) replacement CO2 bottle seal dimensions

[CapitalBee]

Good morning. I succumbed to curiosity last week and purchased the above from Holts. It's a blow back rifle that runs off an 88g CO2 cart'. Now the rifle is probably 20 years old, so I've ordered a seal kit for it (O rings), but I can't see where I might get a seal for the cartridge/piercing cap. The current incumbent looks a bit tired, but I wanted to have this in pieces for as short a time as possible, so wondered if anyone has a source for these seals or has dimensions for a new seal to be made, so I can do a straight swap over and avoid leaving it in pieces on my work bench (if anyone has seen my work bench, they'll know what I mean @Neil54 )

 

[Neil54]

Doesn't the 88g seal with an o ring on the side rather than the face.

I'll look in my workshop ( under all my junk).

 

[Neil54]

From the 850 air magnum.

 

[CapitalBee]

Doesn't the 88g seal with an o ring on the side rather than the face.

I'll look in my workshop ( under all my junk).

No Neil, the cartridge screws down and seals on a thick washer, which has clearance for the piercing pin.

 

[rkr]

I used refillable 88 gram cartridges in mine and later did HPA conversion.

 

[Barrie36]

I did a hpa converted one too,now it’s got me thinking that I need to go and find it and shoot it,I think mine had an issue with the magazine horrible plastic thing if I remember correctly

 

[CapitalBee]

I did a hpa converted one too,now it’s got me thinking that I need to go and find it and shoot it,I think mine had an issue with the magazine horrible plastic thing if I remember correctly

This was purchased without mags, but JS Ramsbottom have them in stock, three for a tenner. Very basic, single moulded parts that rely in the pellets being a tight push fit.

 

[rkr]

Use domed pellets, flat nosed ones will cause issues.

 

[CapitalBee]

I used refillable 88 gram cartridges in mine and later did HPA conversion.

I don't suppose you have any photos of either?

 

[rkr]

I don't suppose you have any photos of either?

Here's the HPA conversion:
P2090087 by abbababbaccc, on Flickr

I have those refillable capsules somewhere in the garage, I can dig them up if you want. It's adapter with a valve that you can use to fill those capsules. You need to weight them empty and then fill in 88 grams CO2. They made the capsule stick out few mills out of the butt plate which was barely noticeable.