Quote:
Originally Posted by ILLusion
Harder kicking blowback
One of my customers had this problem with about half the mags he bought from me. He dropped 3 off in my hands to look at, and upon opening them, I noticed the main square o-ring inside the mag had rolled out of place. It looked like a partial blowout or had somehow rolled out of place. After reseating them and reapplying oil to the entire thing, it seemed to be fine. The customer later said he sealed up the o-ring with grease, and hasn't had problems since.
Unfortunately, the reliability of KJ mags has always been questionable, and for all those who doubted my negativity and criticism towards their mags, this is continued living proof of the crap rubber that KJ continues to use. If the possibility ever arises to get piles of the o-ring rubbers as standby, I'd highly recommend doing so, and storing them in a cool dry place in an airtight container.
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Ya i found after you did that it worked for a while but they vented again, so i grabbed a bottle of AIMTOP silicone grease and just slathered it in around each oring in each mag, i haven't had any of them fail to date and they made it through rhinos scorching heat without a single issue.
The gun is fairly simple to maintain, it can be taken apart with very little work, however you need to be careful of the 2 screws that hold the other barrel to the trigger group, the holes they go into can strip very easily.
With duster the gun is more then gameable even with a TB, mine shoots around 400 give or take with duster and the RATECH TB in it, with the stock barrel it shoots around 380 on duster. It also gave good mag life with duster, I was able to get a full mag (filled with 22 rounds) off on duster while firing at a fairly rapid rate without it chugging down.
I have not found a need to swap out any of the bolt parts yet and most likely wont until it fails. however with the abuse iv put my gun through after looking inside the gun everything looked fine, so sights of stress and very very very little wear. Just be sure to keep the gun oiled.
I plan on slowly replacing my 10 JK mags with the RATECH Long mags and once i get my hands on some ill post a review about them as well.
If anyone has any very specific questions feel free to pm me and i can help you as best i can. Im also in the works of putting together a full guide about the gun addressing everything from cleaning to the mag seal issue right down to the stock mag defect.