"...recently i was experimenting with my KJ m700 and i discovered something that I was wondering if someone could verify for me. I took my bolt apart completely and removed the little allen screw that is in the rear hammer thing, and then tightend the spring in the front all the way down, then put the allen screw back. After doing so, the gun chronos 630fps consitently with .2g bb's. The gas i used was propane, but i checked it also with green gas and it was the same. It used to chrono around 500fps before doing this. I then tried the same thing but adjusted it the opposite way and was able to drastically reduce power (This could be useful for people with a low field limit). If someone else could test this and verify it, i would appriciate it. I think it would be a good piece of info for all kj m700 owners, or future owners." - Sulfuric_t2, Airsoft Retreat Forums
::Instructions::
- Take out your bolt as the manual shows.
- Flip it over and you will see two small screws (flat head).
- Remove these and the front part of the bolt will remove (part with the nossle on it).
- Next located the small allen screw on the bottom of the hammer (in back of bolt on bottom).
- Loosen the allen or even take it all the way out (just ot be safe so no pressure on the rod).
- Next you will see a rod sticking out the front of the bolt where the piece with the nossle came off. There is a sloted head on this rod. turn it clock wise untill it stops. This is the maximum power position (for me 560fps).
- Now if you turn it counter clockwise, it will decrease the power. I found that no more than 2 full turns should be done (at this position gun shoots 280ish and if you go more, the gun will not fire anymore for lack of spring tension). When pick where you want it to be, put the allen screw back in and make sure its snug, then reassemble the bolt the way you took it apart. Put back in gun and have fun. Oh yeah, make sure that all the parts in there have some oil on them and move freely.
There you have it, this should make it possible for you to make it under whatever field limit you may have in your area. For me i tune it to shoot just a little under 400 with propane and green gas. Just make sure before you chrono at your field of choice, fire the gun maybe twice before chronoing because on the gas sniper rifles, the first shot or two may have a higher fps than the bulk of your shots. Hope this works for all you as well as it worked for me.
*Instructions by Sulfuric_t2*
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posted by Sulfuric_t2@airsoft reatreat forums
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*Note: this post was recreated here for reference. In the event that the original thread closes, this thread will remain active for those who wish to read this. Please consult your local airsoft gunsmith before performing any modifications if you do not know how to do them yourself.*
*This* post is for reference only, use at your own risk.