Hi guys need some advice, managed to fit a ra-tech inner barrel and hopup rubber, and with help from EVG31337, I managed to install kjw m4 npas kit. Only prob was when putting back together I accidently stretched the cylinder spring. It all seems to still work but what are the effects long-term. I'm a novice with gasguns so unsure.

Thanks for the advice.
From a foggy UK have a goodone.

Alright with the Long mag, RAtech inner barrel and RAtech Hopup rubber.

Im shooting 325fps at 1.7J when using bastard .36g BBs on propane.

The long mag has made it very consistent with a flux of about 5-10FPS (excluding FPS drop due to cooldown)

Duster test to follow

That seems quite low for having the extended tightbore in and heavy BB's...

The heavy hopup does that

The RA tech is much harder than the originak KJW. Mine is shooting 400-410fps with .20. Have yet to chrono it with a heavy BB. Heaviest I have right now is .30 which seems to work alright. Keep in mind I am using the m1 carbine tightbore.

Alright so with the same internal setup as listed before.

Im shooting 280fps at 1.3J when using bastard .36g BBs on duster

Still fairly consistent however not as consistent as propane. Max FPS never broke 280.

This works out to 376fps on .2os if you do the conversion.

I had to game mine after my primary gave up. Bio only field, .25s was the heaviest I could get my hands on.... after trying to predict shot trajectory, I was able to curl a shot around a tree, shooting sideways to get the hit. Never again! Btw, same setup as Viperfish.

propane or duster?

on duster you can push a lighter bb but i would never use lighter then a 28 in it.

.28 with the ra-tech hopup and tightbore on duster. Would that make a good combination for around 400 fps and accuracy?

I plan to use that for my M1 Carbine mod at the next ww2 game here in Québec.

if you can use .3, the show will be slower of course but it will go out nice and far with a nice tight grouping. These guns love heavy bbs once you get that hopup in there.

Cool mate, will do!

Not a problem.

On a unrelated note, has anyone swapped out there cocking handle for an upgraded one?

if so would you be willing to sell me your stock one? hard to game the gun with mine broken :(

Kind of off the airsoft part of the topic but the stock kit that is used out of the box by kjw is a stock kit available like that for the real .22lr 10/22? ive been looking at buying one, ruger offers a "tactical" version with an ati side fold stock kit which isnt bad but i hate side folders and i like the stock on the airsoft version. any help like a manufacture or the stock name to search would be great.

Buy one you cheap bastard! Haha.

Also, I've used 0.25's in mine with propane no problem.