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Kookamater · January 10th, 2009, 19:57

Murdoch provided a good detailed breakdown on the M500. Unfortunately, as I expected with my Chinese clone, there were a few extra steps needed. If you have the chinese clone, you'll probably wanna read this.

The ACM needs almost a total strip down before you can access the internals. This is basically step 4, but only if you have the ACM. First, you need to take off the whole barrel, including the lower loading tubes since everything is attached. And here's why:

See, the inner barrel is attached to the internals. Take off the outer barrel by removing two tiny allen screws near the body of the gun. You'll see them, but my camera couldn't take good shots for you. Once you unscrew those and also follow Murdoc's step 5 for removing the screw near the loading tubes, you're gunna pull off the barrel and tubes all at once since it's all attached. It'll require a bit of force, but still, be careful

Also note, if yours has a heatsheild like mine, you need to take that off first before being able to find the allen screws.

Once you do all that, you're free to unscrew the barrel from the internals. I used a small wrench to pinch it lightly and twist it out.

As you can see, you'll never get the internals out without unscrewing the inner barrel. Also note that tiny screw that was in that aluminum piece is important. Don't lose it!

And once that's all said and done, you have a worktable full of tiny pieces. But the rest of the takedown is pretty much as Murdoch described.

NOTE: one charging handle should be sure to fit, but the other might have too much metal on it. This is when you need to cut off the right ammount where it makes contact with the pumping tube, otherwise it can't lay flat and straight. You'll see what I mean when you try and do it. It's just a matter of doing a bit of cutting. Look to the guns body to figure out which handles go on which side, as one has a clear 'T' shaped hole to accomodate the handle with the 'T'.

And I HIGHLY recommend you buy the steel handles if you have either the marushin or the ACM, because this is why:

When you can bend it like butter with your fingers, you know you want something better.

Hope this helps, and thanks again Murdoch!

January 10th, 2009, 19:57	#9
Kookamater Trader rating Join Date: May 2007 Location: Vancouver, BC	Murdoch provided a good detailed breakdown on the M500. Unfortunately, as I expected with my Chinese clone, there were a few extra steps needed. If you have the chinese clone, you'll probably wanna read this. The ACM needs almost a total strip down before you can access the internals. This is basically step 4, but only if you have the ACM. First, you need to take off the whole barrel, including the lower loading tubes since everything is attached. And here's why: See, the inner barrel is attached to the internals. Take off the outer barrel by removing two tiny allen screws near the body of the gun. You'll see them, but my camera couldn't take good shots for you. Once you unscrew those and also follow Murdoc's step 5 for removing the screw near the loading tubes, you're gunna pull off the barrel and tubes all at once since it's all attached. It'll require a bit of force, but still, be careful Also note, if yours has a heatsheild like mine, you need to take that off first before being able to find the allen screws. Once you do all that, you're free to unscrew the barrel from the internals. I used a small wrench to pinch it lightly and twist it out. As you can see, you'll never get the internals out without unscrewing the inner barrel. Also note that tiny screw that was in that aluminum piece is important. Don't lose it! And once that's all said and done, you have a worktable full of tiny pieces. But the rest of the takedown is pretty much as Murdoch described. NOTE: one charging handle should be sure to fit, but the other might have too much metal on it. This is when you need to cut off the right ammount where it makes contact with the pumping tube, otherwise it can't lay flat and straight. You'll see what I mean when you try and do it. It's just a matter of doing a bit of cutting. Look to the guns body to figure out which handles go on which side, as one has a clear 'T' shaped hole to accomodate the handle with the 'T'. And I HIGHLY recommend you buy the steel handles if you have either the marushin or the ACM, because this is why: When you can bend it like butter with your fingers, you know you want something better. Hope this helps, and thanks again Murdoch!