[Paco]

All I put in mine was a 200% spring and PDI spring guide.  It worked fine.

[Bladerunner]

thats great. Thanks! now I don't have to spend so much right off the bat. I'm just wondering, what did your gun chrono at? I know they are all a little different, but I've heard that the 200% will spit the .20s out at around 470 FPS.

[Bladerunner]

I've got another question. I'm not going to be able to buy a cylinder key to open up the APS cylinder. I heard that it was a very hard thing to do. Is there an easier way to do it without the key so I can stick my spring in my gun? And will my gun be ok for a couple of games if I don't replace the spring guide with a new one immediately? Right now I've got the spring but the spring guide isn't in stock. I figure I can play a couple of games with the 200% spring in it, and then replace the spring guide as soon as I receive it.

[Boondock Saint]

I have heard that you can't take it apart easily without the cylinder key. But I have a Classic Army M24 and I put a 250% spring in and the cylinder came apart easily for me.

[Bladerunner]

OK. I understand the upgrading of the spring guide for the new spring, but I was talking to someone on the airsoftretreat forums that told me that I'll need an entirely new piston like the V3 so that the new spring guide will even fit. He told me that the new spring will need a new spring guide and the new spring guide will need a new piston. Is that really all that you had to put in Paco? I'm just confused between the different suggestions that I've received. I just don't see the reason to buy a bunch of extra reinforcement (piston ect.) if I can't be putting my gun over 500 FPS. Thanks.

[Boondock Saint]

I had to buy a new spring guide to fit my new spring I bought. It is a P.D.I. spring. It is wider than the stock spring in my M24 rifle. So I had to buy a V3 first factory piston to fit it. I personally went ahead and bought a piston head, spring, spring guide, and piston. So I wouldn't have any problems with internals. Many people told me that a P.D.I. spring will work buy itself in the gun just fine. But that was obviously wrong. You can buy a smaller diameter spring. I think First Factory Sells them, to fit the stock guide and piston.

[Bladerunner]

sooo, you're saying that the PDI spring guide and PDI spring won't fit into the APS2-SV stock piston? So I'll need a new piston for sure? Sorry I got confused when you started talking about the M24 you have. And I thought that a new piston comes with its own piston head. I definitely want to reinforce the internals but I'm not playing constantly right now so I don't really need to go out and replace all the crucial parts immediately. I just want the bare minimum upgrades for my rifle with a PDI 200% spring for now so that I can decide on what I want to do with my rifle later in terms of extra upgrades.

[Boondock Saint]

To tell you the true I have no idea if a P.D.I spring will into the stock aps piston. I was just letting you know of my experience. Forums are great for info, but you sometimes get different info for so many people and you don't know what you go with. Do you have the P.D.I. 200% spring? If so just open the rifle and see if it will fit. If you don't I can find out from a guy that owns a APS2.

[Bladerunner]

yea. I just received my stock APS2-SV and also a PDI 200% spring. But I don't have any other internal upgrade parts. I took my gun apart enough to see that the stock spring is much smaller than the new PDI 200% spring. I figure the bare minimum that I need is a new spring guide. but I want to be sure. Even if the new spring does fit, I read from various sources that it will break the stock spring guide because it is plastic. If you can ask that guy you know that would be great. I haven't heard from Paco for awhile so I don't know of anyone else that has an APS. I talked to the Q project and of course they want me to buy all of the top-of-the-line products and spend 117 bucks just to reinforce two small pieces. I know that I can find PDI parts that will work fine and cost much less. Its not like I'll be reaching the 1000 round mark within a couple of months or something. I don't think I play often enough to really put a lot of wear and tear on my gun. If you can talk to your friend and see what he thinks abnout just sticking a PDI 200% spring and a PDI metal spring guide into the gun and whether or not everything will fit and work ok. Thanks for the help so far.

[Boondock Saint]

I talked to my friend and he said that the stock spring is smaller in diameter than a P.D.I spring. To put in the P.D.I spring you would need a new piston. The stock piston isn't wide enough to accept the P.D.I spring. They sell the FIRST 3 Element Piston for $40 and a spring guide for a P.D.I spring for $27. Thats all you need for the 200% spring to work. Let me know if you have any more questions.

[Pancho]

This all sounds too complicated for me. As I intend on buying a sniper rifle, and want it upgraded, I'll just give it to Harley or Paco along with whatever cash they want to do it. That is, when I GET the cash to do it!

[Boondock Saint]

It really isn't that complicated. Sniper rifle upgrades are easier to do than an AEG.

[Pancho]

Heh, well I don't do that either!

[Harley]

I belive you need to buy the PDI spring specific for the APS/M24 guns.  Yes they are smaller in diameter that a normal AEG spring.  Look at Wargameclub's site and you'll find what you need there.  Do a search for APS on their web site and you'll get everything at once which is a lot easier that looking through all the seperate sections.

[Paco]

I upgraded my first APS-2 SV with a PDI 200% spring and PDI metal spring guide.  It worked fine...  yes, John is correct - you need to buy a spring that's specifically FOR an APS-2/M24 and it will fit fine.  The hardest part of the upgrade was getting the nozzle off the cylinder.