That is polyurethane foam. Its the other factory option to pick and pluck, soft, open cell and eventually disintegrates. The polyethylene foam is much better long term and for heavy objects.
Is it possible your reg pressure is below 120 bar/12mpa? Low pressure causes failure to fire, but sear is unlatched, so safety will not engage, any rise in pressure (warming up or filling) causes valve to complete firing cycle
Looks like a rubber piece (antivibration/loosening) that goes in the trigger adjusting screws in back of gun. Serrations are from screw threads. Could have jammed your trigger mechanism or allowed it to come out of adjustment. Call Kelly.
Are they opening the valve while filling? They are used to one way check valves on paintball tanks. Maybe a novice operator. Run compressor until output gauge reaches tank pressure, open tank knob, fill......etc
Huggett snipe is great, gold standard of mods in .22 and .25. I do have the huben moderator, smaller, lighter, lets you use iron sights, not as quiet as the Snipe. Mini Mgna is shorter than snipe but bigger diameter may even block a Red Dot.
Ah no. Do not use any body part you want to keep. If want to see if there was moisture then run through filter. If you dont care and just want it out, blow it out slowly.
Dry your shop air first, it has another water separator on intake, and dessicant dryer on air feeding the compression side. No issues in my shop but my shop air goes through refrigerated dryer. No issue in buddies shop with home depot 7 horse compressor in parking lot.
Ninja all the way. Easiest most reliable one hand operation. 1 knob- Clockwise to fill, counterclockwise to bleed. 2 gauges. I have other portable tanks but Ninja is easiest to use and no leaks or worries. Airtanks for sale and others that have small 2nd knob for bleed, fall off from...