[CDN_Stalker]

Originally Posted by DONSTER 125

unfortunately the link wont work for me. i always have trouble with connecting to that site. always says it can't find the server. but that is an interesting point. did you replace the recoil spring? and how is your sear pin (part #66) holding up?

Recoil spring was the first piece I replaced, and it's shit. I'll C&P the review here for you.

I bought this for my KSC MK23 and have to say I'm disappointed. For starters, my model isn't clearly defined, looks to be pre-2005 but only by a year or so, it has the dual spring recoil system as well as the solid steel recoil guide.

Recoil spring in the kit didn't fit all the way, I set it and the guide (together on my bench) and went off to another room to get the diagram. Came back and found the spring bent, I gently bent it back straight, it snapped. VERY weak (or maybe over tempered)tempered spring.

Inner tube that fits in the nozzle fit fine as well as it's spring. Stock tube has holes inthe base of it, this has long slots cut in the sides, as well it's about 1/8" to 3/16" longer than stock. This causes it to be pressed farther back when resting on a chambered BB, opening up the area that expanding gas can pass through, aka. higher fps. The rear part (shown above, better on RedWolf's site........ also has exploded diagram with replacement parts shown). didn't fit anywhere in my gun either.

Hammer spring is too long by about 1/2" and the coils are too tight, meaning a very strong resistance, caused my slide to lock up a few times during recoil. I put the stock one back in after and it worked better.

Chronying my gun in the basement, musta been maybe 20-22C down there, propane and 0.20g, my stock 315fps KSC MK23 now sits around 280fps. I assume this upgrade kit only shows it's potential in hotter weather (much higher gas expansion rate), but will have to wait til summer to truly evaluate what parts I was able to put in my gun.

Oh ya, part #66 has no issues in mine, and I got it third hand used, and so far I must have shot at least 2000rds through it since I got it last July.