Airsoft Canada - View Single Post - ATT: ALL M500 Shotgun Owners! USE YOUR GUN IN THE COLD!

Murdoch · August 10th, 2009, 16:45

I don't feel there's much point to doing all that work, just to have a small tank on the side. You might as well just carry a slim propane tank in your gear for all the extra gas that solution would provide.

The main downside to this mod is that you'll run out of loaded bb's long before you run out of gas. (That's mainly for the 8mm version; the 6mm ver. holds a lot more rounds but you see my point) And these guns are no treat to reload in the field.

Another thing you should consider; these CO2 and HPA tanks put out anywhere from 1000 to 4000 psi. The shotgun only requires around 100 to 200 psi to operate. The higher you go, the more dangerous you are to others, and beyond that the gun will not hold back the gas. The main seal around the front of the firing pin will burst and at times, hurl itself down the barrel to freedom (I know from experience :P ). You'll end up having to buy a pressure regulator (~$120) which will take up more room on the stock.

I'll take some pics of my setup and you can get some ideas and decide if it's worth it.

UPDATE:

I decided to drill out and tap the high pressure release valve since it wasn't going to be used here. Eventually went with a 90 degree press fit connector.
Body was drilled and tapped to 1/8NPT, a common plumbing and paintball thread. Feeds into a Macro line (the worst thing about this project.)
And if I decide to go back to propane I just thread in a blank, and it's good to go.

Ran the "too-damn-stiff" Macro line along the stock.

The money shot. HPA tank, and Palmers Persuit Low Pressure Regulator (stabilizer actually.. I think). 0-700 psi fully adjustable. Only need a few turns to get my 200 psi.

Remote line with slide check. I originally hoped to go from tank to gun with this, but found it would require me mounting the stabilizer on the gun itself.

The whole getup, with tank in bag. Not horrendous, but that god damn Macro line is too stiff and will make gaming this thing even less fun than it already appears.

In the end, I should have walked away from this one. I still have to tweak it to find the right pressure so it won't hurt, but to be honest, I don't see myself using it at game. I'd much rather use it with propane in a skirmish for shits and giggles and then back to aeg's or pistols. I don't regret buying the gear though, because pneumatics are awesome (geek out!), and I can use this basic rig for other things.

Anyways, enough blathering; at best it's an interesting toy, at worst a warning not to throw good money after.. er.. not as good money.

August 10th, 2009, 16:45	#37
Murdoch Trader rating Join Date: May 2006 Location: Scarborough, Ont.	I don't feel there's much point to doing all that work, just to have a small tank on the side. You might as well just carry a slim propane tank in your gear for all the extra gas that solution would provide. The main downside to this mod is that you'll run out of loaded bb's long before you run out of gas. (That's mainly for the 8mm version; the 6mm ver. holds a lot more rounds but you see my point) And these guns are no treat to reload in the field. Another thing you should consider; these CO2 and HPA tanks put out anywhere from 1000 to 4000 psi. The shotgun only requires around 100 to 200 psi to operate. The higher you go, the more dangerous you are to others, and beyond that the gun will not hold back the gas. The main seal around the front of the firing pin will burst and at times, hurl itself down the barrel to freedom (I know from experience :P ). You'll end up having to buy a pressure regulator (~$120) which will take up more room on the stock. I'll take some pics of my setup and you can get some ideas and decide if it's worth it. UPDATE: I decided to drill out and tap the high pressure release valve since it wasn't going to be used here. Eventually went with a 90 degree press fit connector. Body was drilled and tapped to 1/8NPT, a common plumbing and paintball thread. Feeds into a Macro line (the worst thing about this project.) And if I decide to go back to propane I just thread in a blank, and it's good to go. Ran the "too-damn-stiff" Macro line along the stock. The money shot. HPA tank, and Palmers Persuit Low Pressure Regulator (stabilizer actually.. I think). 0-700 psi fully adjustable. Only need a few turns to get my 200 psi. Remote line with slide check. I originally hoped to go from tank to gun with this, but found it would require me mounting the stabilizer on the gun itself. The whole getup, with tank in bag. Not horrendous, but that god damn Macro line is too stiff and will make gaming this thing even less fun than it already appears. In the end, I should have walked away from this one. I still have to tweak it to find the right pressure so it won't hurt, but to be honest, I don't see myself using it at game. I'd much rather use it with propane in a skirmish for shits and giggles and then back to aeg's or pistols. I don't regret buying the gear though, because pneumatics are awesome (geek out!), and I can use this basic rig for other things. Anyways, enough blathering; at best it's an interesting toy, at worst a warning not to throw good money after.. er.. not as good money. Last edited by Murdoch; August 10th, 2009 at 22:21..