Hop up question.

Schlyder · October 29th, 2008, 17:59

Changing the inner barrel on my gun (CA53) to a Prometheus tight bore. Hop up is out of the gun, inner barrel is removed..... Now, on replacing the inner barrel...
I have gone through the R&R walkthrough here. http://www.airsoftretreat.com/review...uct=118&cat=48
Now my question has to do with the brass spacer, it does not tell me what to do with it, or even shows it. What is the correct procedure with this brass spacer. It is very tight, and it is difficult to slide on the new barrel. I can get the barrel in without it no problems, but I would like to know how to correctly get that brass ring spacer installed correctly. Thanks in advance.

The Saint · October 29th, 2008, 18:04

Actually, you can just barely see the spacer in some of the pictures, number 7 for example.

If you're having trouble installing it, you can put it on very last. Just put it over the barrel, slide it down and push it into the space between the barrel and the chamber as far as it'll go (without going pass the C-clip).

Schlyder · October 29th, 2008, 18:11

Mechbox.com is down for repairs right now too, Thanks Saint, That is what I figured, but it is very tight and does not slip on more than 1cm. Can I take some sandpaper and sand the barrel down a bit? to try to get it to slide on easy. I know to not to sand beyond where the c clip is located correct??

The Saint · October 29th, 2008, 18:21

Try lubing it, sanding is not a good idea as it might be uneven. The ring itself is less than a 1cm, so once it's hidden by the hopup chamber itself, you don't need to get it any deeper.

Schlyder · October 29th, 2008, 18:23

will try that, thanks again Saint.

m102404 · October 29th, 2008, 19:25

I had two guys put Prometheus barrels in and I couldn't fit a brass spacer ring over either...couldn't even get them started. I tried about 6 other rings that I had as extras and no go with any of them.

Finally gave up and just assembled the rifles without the spacer...

Schlyder · October 29th, 2008, 19:36

Yeah it was tight, I lubed and it helped a little, but not good enough. So I did take some fine sandpaper and just sanded lightly the area between the hopup slot and the c clip slots, it worked good, ring slipped on easy then.
Barrel is in, and gun is back together, and battery is charging. I have to test with .20 .25 and .28 and see what works best with the new barrel now. Then next week will be with the new Systema mechbox setup.

And I have to break in a new KJW P229 this weekend

Thanks for the input guys.

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October 29th, 2008, 17:59	#1
Schlyder IronOverlord Trader rating Join Date: Aug 2008 Location: Broadview,Saskatchewan	Hop up question. Changing the inner barrel on my gun (CA53) to a Prometheus tight bore. Hop up is out of the gun, inner barrel is removed..... Now, on replacing the inner barrel... I have gone through the R&R walkthrough here. http://www.airsoftretreat.com/review...uct=118&cat=48 Now my question has to do with the brass spacer, it does not tell me what to do with it, or even shows it. What is the correct procedure with this brass spacer. It is very tight, and it is difficult to slide on the new barrel. I can get the barrel in without it no problems, but I would like to know how to correctly get that brass ring spacer installed correctly. Thanks in advance. __________________

October 29th, 2008, 18:04	#2
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	Actually, you can just barely see the spacer in some of the pictures, number 7 for example. If you're having trouble installing it, you can put it on very last. Just put it over the barrel, slide it down and push it into the space between the barrel and the chamber as far as it'll go (without going pass the C-clip). __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

October 29th, 2008, 18:11	#3
Schlyder IronOverlord Trader rating Join Date: Aug 2008 Location: Broadview,Saskatchewan	Mechbox.com is down for repairs right now too, Thanks Saint, That is what I figured, but it is very tight and does not slip on more than 1cm. Can I take some sandpaper and sand the barrel down a bit? to try to get it to slide on easy. I know to not to sand beyond where the c clip is located correct?? __________________

October 29th, 2008, 18:21	#4
The Saint Trader rating Join Date: Jan 2005 Location: Quebec	Try lubing it, sanding is not a good idea as it might be uneven. The ring itself is less than a 1cm, so once it's hidden by the hopup chamber itself, you don't need to get it any deeper. __________________ "The Bird of Hermes is My Name, Eating My Wings to Make Me Tame."

October 29th, 2008, 18:23	#5
Schlyder IronOverlord Trader rating Join Date: Aug 2008 Location: Broadview,Saskatchewan	will try that, thanks again Saint. __________________

October 29th, 2008, 19:25	#6
m102404 Tys Trader rating Join Date: Apr 2006 Location: Toronto	I had two guys put Prometheus barrels in and I couldn't fit a brass spacer ring over either...couldn't even get them started. I tried about 6 other rings that I had as extras and no go with any of them. Finally gave up and just assembled the rifles without the spacer...

October 29th, 2008, 19:36	#7
Schlyder IronOverlord Trader rating Join Date: Aug 2008 Location: Broadview,Saskatchewan	Yeah it was tight, I lubed and it helped a little, but not good enough. So I did take some fine sandpaper and just sanded lightly the area between the hopup slot and the c clip slots, it worked good, ring slipped on easy then. Barrel is in, and gun is back together, and battery is charging. I have to test with .20 .25 and .28 and see what works best with the new barrel now. Then next week will be with the new Systema mechbox setup. And I have to break in a new KJW P229 this weekend Thanks for the input guys. __________________ Last edited by Schlyder; October 29th, 2008 at 19:38..

Hop up question.

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