I have a Bulboss qe in .25 cal id like to trade for a .177 rifle any maker model. The gun has had mod done to it including the auto safety disconnect (safety still works manually) The air valve has had all the hole plugged except the main one which was widened for more consistent flow. There has also been a huma reg installed with great results. The gun was tuned with 25g jsb kings and you get about 20 ish shots per fill I usually just go two mags 16 shots with very very good ES at about 850fps average the gun is a tack driver at 50 and at 100 if the wind aint two bad you can get respectable groups if you do your part. I will sell the gun if someones interested throw me a price. More info can be provided if you PM me. Thanks for looking!