Mad Dog Airguns

 Tuning guide for Gamo Hunter 440 AS. If you have arrived here, then you likely own a Gamo Hunter (or similar). This is mine, and I do love it. Shoots consistently, it's fairly accurate and the build quality for a cheap gun, is to my mind pretty damn good. But! Now here is the but. These guns are mass produced, and although most gun manufacturers have some smidgen of quality control, some are better than overs. For this price you can't expect too much. Having said that, I own two Gamo rifles and neither are particularly bad.   You will find that the imperfections are inside the gun. They don't make it unusable, but the small imperfections can have a effect on accuracy. Take the trigger for example. The trigger on both my Gamo rifles, are the Gamo SAT (smooth action trigger) trigger. And although they work well and have some adjustment, they can be better. In this tuning guide, I have put together for the Gamo Hunter (and other similar Gamo rifles), I show you how to polish ...

  Tuning an Umarex HDS.68 So you have already removed the restriction in the gas chamber, fitted the Powerkit68 and removed the brass top hat that sits in front of the brass gas tube. And you want more power? Well my example of the gun was coming in very under powered before the mods and, although a massive improvement after, I still wasn't getting the power that some other people have been getting. I didn't film this work but I did take pictures throughout the procedure. Hopefully this will be just as good an information source as one of my videos. I'm assuming you have already taken the gun apart before so you will know how to do that. The internal mechanism will have to be stripped down. We are going to remove the barrel assembly from the gun which is quite straight forward, just make a note of where everything goes. It is a good idea to take pictures at this point to remind yourself of how it goes back together. Remove the screw from the barrel catch and you should now ...