Ok I'm very much considering getting the KWA MP7 which if you don't know is quite expensive and i'm not going to get it if i cant use it here because the fps is about 360 so if anyone who works here could let me know if you guys are letting velocity reducers be used or not. Thank you in advance.
Last I heard the moderators were going to do some field research on the reliability of the devices full auto capability.
I don't even know if i would bother with a Velocity Reducer (VR). They're too unreliable in my own opinion and don't work on Full Auto. I'm getting my spring changed out since mine shoots hot. I 'd do the same.
The spring reduction may be the best route, sadly the Velocity reducers are almost impossible to get in. That is unless we want to pay retail for them, and even then they are very limited quantity.
One of the goals of getting a good chronography was for testing of odd items like these.
I personaly have no experience with the velocity reducers, nor do i have an opinion towards them good or bad.
All of my Airsoft weaponry right now is setup for out door play and shooting hotter that 400fps. So my plan is to build an aeg that I've had in mind for about two years specifically for the indoor arena. When I have the specs drawn up for it I'll post a few hints toward what I'm planning later.
Ok thank you all but is there a way to lower the fps of a GBB without cheating. Like i could fill a mag with like 1 seconds of gas and then i'd pass but I like to try and be an honest person. So is there anyway I can HONESTLY lower the fps of this thank you I really want to get this gun.
the verdict is in; the "velocity reduser" . after testing 10 of thies units over a period of four weeks on 10 diferant brands and styles of guns. i have got to be honest; failure. at first the units seemed to hold thier own, but it is true, only in semi auto. when fired on full auto the incert sleaves vertualy show no resistance. and on medium powered guns they just ware out to quick... so at this time we at Cincinnati Airsoft will not be using this product for full auto simulation game play. so sad to say for all of us 400fps power punching players. we got to change the spring or get another sweet piece of armory.

Sounds like y'all did quite some work on these things, good job sir. My question would be, how well did they really perform on semi-auto? Can you pull the trigger fast enough for them to fail? Certanly most people can't pull the trigger faster than a few hundred rounds per minute.
Did they fail at any time during the semi trials?
to the question above. they sem to work well enough in semi. as to the quickness of pulling the trigger, the gung with active braking such as mosfet power: good/bad. the bad is that when fired as quickly as i can repeetedly pull the trigger ther seem to slip a fue high fps through. but when taking my time and shooting 3 rd burst they did well. now with the guns with the tipical gearbox had issues with the trigger stoping at a half cycle; yet still shot well. now with that being said; over all i still came to the same problem. the sleave inserts start to wear out after 1,500 to around 2,000 shots. now ; with the cost of thies units costing around $15.00 to $20.00 plus shipping if you order them online. it does not seem very cost affective to replace it after every 2,000 shots. consitering that there is no sleave acceseries on the market. although i am currently testing differant types of materials for this issue. more info on this will come soon. thank you all and happy shooting.

good review doug my man. I hope I can use that CQ stubby M4 with the mosfet power we putting in it at this place. Otherwise i might have to go with that tar-21 after all. lol