**Some parts shown in this disassembly guide are after market parts. When you take down your gun and the parts are different, you now know why.**
Width- 2.75"- 1.5"
Height- 6.5" from the bottom of the stock to the scope mount
Weight- 5.35 oz.
Magazine- 30 rounds
Barrel length: 430mm (pro) 303mm (G-spec)
Anyways, onto the takedown. The first step in disassembling your rifle is to take it down. To do this, you need to remove the two screws pictured here:
Now to separate the stock from the receiver and the outer barrel, you need to tilt the front of the barrel up and then pull it out. Don't try to pull it strait up because there is a small "hook" on the trigger guard that holds the top half of the gun on. (Sorry, I don't have a picture of that)
Now you have a few choices. You can work on the hop up unit, the trigger mechanism, or the cylinder assembly.
**A zero trigger was used here but the spring guides stopper is located in the same spot. However, it does look different**
Before you do anything, you have to remove the trigger guard. This is simple. Just take out the large screw located towards the back of the trigger guard.
The first step in breaking down your cylinder is to remove the spring guide stopper. To do this, you need to "pop" it out. To do this, you can use a flat head screwdriver, a small block, or even your just hand (it might be a little more difficult). To remove it, all you need to do is pull/push it strait down.
Now that this is done, you can pull the cylinder out just like you were cycling the bolt.
The next step is to take off the cylinder head. If you have already taken out the cylinder pin then you just need to unscrew the head. If you have not removed the cylinder pin then read this guide. To unscrew the cylinder head and not damage it, I used needle nose pliers.
Note: the pliers are in the holes, not closed around the nozzle.
You can now take out and replace/maintain parts.
From left to right, top to bottom: Spring guide, spring, piston, cylinder, cylinder head.
Now you have completely disassembled the cylinder. When reassembling, be careful not to damage the O-ring around the piston.
Assuming that you have already removed the trigger guard and spring guide stopper, the next step is to take out the two screws that sit within the red circles in the following picture:
Now that you have taken out these screws, the trigger mechanism should come right off. If it doesn’t, check to see if you have removed the spring guide stopper. If you haven’t, it will hold the trigger box on.
Now that it is off, you can start to open it. Remove the four screws and the entire safety switch.
Now you can slowly pull it apart. This is what the insides should look like:
Now you can take the trigger sear off of its “post” and tap the smaller “post” out of it with a small screwdriver. There should be five parts resulting from this. The trigger sear, the piston sear, the small post connecting the trigger and piston sear, the small spring pushing up on the trigger sear, and the smaller spring between the piston and trigger sear that keeps the piston sear upright.
Now you can swap out parts within the trigger box.
Now reassembling the piston and trigger sear might be a little tricky for some people. To do it, what I do is push the post through the hole just enough so that the smallest spring can fit on it. Slide the spring on it and then fit the piston sear in from there. Now push the post all the way through and it is back together! This picture might help to clear it up a bit:
I assume you can put it back together from there. It isn’t too complex.
Hop Up Chamber:
I think that this is the easiest to work with. There are very few moving parts and almost nothing has the potential to fly out at you.
The first thing you need to do is remove the small screw at the base of the outer barrel. It can be found at the tip of the screwdriver in this picture:
You can now unscrew the outer barrel. However, if the barrel is hard to unscrew is feels or sounds like it is making a scraping sound, immediately stop and remove the screw closest to the tip of the barrel and continue unscrewing. It should go smoothly from there.
Now remove the screws that are circled in red:
Once you take off the large block, you will see this screw:
Take it out and remove the lever also. Now you can push the hop up chamber and the barrel out of the outer barrel.
Now unscrew these four screws and you can pull the hop up chamber apart.
P.S. - If anyone could take a picture of the trigger mechanism with the spring guide in it I would appreciate it. I gave mine to a friend whose USR spring guide broke.