All I can say is WOW!!!!

First experiment today, took me about 5 mins to knock up an SSG at work. Allen bolt with the head on the outside with small o-ring under the head, nut on the inside, 4mm hole drilled through the rear plug. Maybe about 3/4 mm preload on the spring.

I didn't bring my combro with me so couldn't do any FPS tests, but over several hours, leaving at least 30 seconds between shots, it made at least 90 shots at near on full power, and then rapidly dropped off from #91 onwards. I took the gas out at #95.

The difference was immediately apparent, as the sound of the shot going off was noticeably 'snappier' and shorter, with no vibration evident. I also checked this with the rather unscientific method of resting the muzzle on the counter as I dry-fired, and there was no buzz as you normally get when you do this.

I am immensely pleased with how this turned out, and will be fitting the SSG to the pistol in the first post later on tonight, when I will also do some chrony tests.