Danhc92

The madbull ones are bullet proof and work very well. Rothernberg propane or coleman propane will be fine, other brands mix in butane which lowers the pressure. MAP gas is much higher pressure so is good in winter but not so great in the summer.

It will be fine with propane at any temperature that you are likely to encounter, if it gets really cold, you can use MAP gas instead.

Qore ice plates, especially with the weather getting warmer 🥵

Dry propane would be best, you can use the blue plumbers propane bottles with a madbull adapter.

I used a spare tm psg1 scope on a WE M14 and pretty quickly it started to loose its zero after a few shots. So I would imagine it would break pretty quickly on a VFC psg1

There are all in one hose assemblies that are all in one, but mine leaked at one of the joints after 2 years, so I decided to go with my current set up. There are also single piece fittings that are all in one, however They dont have an isolation valve which means you have to use the valve on the bottle which is quite difficult when its upside down! Additionally the single piece fitting is very short, so the coleman bottles clash with some of the calor bottles. In short, the two pieces i linked are the easiest to use. Depending on how old your coleman/plumbers bottle may have a ome way valve fitted, this is easily resolved by using a schrader valve tool and a 4mm drill bit as shown below. https://youtu.be/JIzjIYivr_M?si=T7u7vNT-Rd22UZ_R

The amazon one screws into the red calor bottle, the ebay one then screws onto that and the 1lb plumbers bottle then screws on.

Is there any damage to the front of the nozzle? Sometimes the square bit at the front of the bolt bends upwards which causes jams. You can gently heat it and bend it back down if this has happened.

pretty sure they will be fine with a tonne of plastic bb hits...

https://www.ebay.co.uk/itm/Propane-Adapter-1Lb-to-20Lb-QCC1-Propane-Refill-Elbow-Adapter-with-Gauge-a-E3M3-/125961280676?mkcid=16&mkevt=1&_trksid=p4429486.m46890.l6249&mkrid=705-154756-20017-0 https://www.amazon.co.uk/dp/B09H6ZGD1S?ref=ppx_pop_mob_ap_share This is what I use, the second one is a thread adaptor from the old style propane connection to the new type. For filling gas mags from the 1lb bottle get a geniune madbull adapter, they are increadibly reliable and last a long time.

You can buy adaptors with a ball valve on ebay quite cheaply, I just leave mine permanently attached and the gas bottle inverted on a work bench.

I use a heavy recoil buffer and spring in my m4a1 and spr mod 0 during the summer with propane and have never had an issue with cracking.

Is the adapter properly screwed on when your using the blue propane? Is there any MAPP gas left in the mag before you try to fill it with propane?