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Discussion Starter · #1 ·
Hi all,

I just recently purchased a CA M24 Military type. I'm looking to upgrade the SWS to shoot about 550 fps and/or over. I've been doing some research and have noticed that many of the parts used in APS 2s can be used in M24s. However, my problem is that I'm not sure exactly which parts would work in an M24 and which wouldn't. I'd hate to start purchasing parts to only later realize that they're not compatible.

So with that, I was wondering if anyone could point me in a direction, as far as, which parts they would recommend to start building upon my platform.

Thanks for your time!
 

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Welcome to the forums mate, a quick and simple upgrade would be the CA 300% drop in Cylinder kit, it'll get ya right around the 525-550 mark. Another thing to invest in would be a PDI Hop-Up, welcome to the forums.

-Mosin
 

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Discussion Starter · #3 ·
Thanks for the information it's very much appreciated. Also thank you for the very warm welcome! I have seen the cylinder drop in kits. My only question is; are the rest of the stock internals strong enough to handle that powerful of a spring?

Three more questions: 1) The APS zero trigger assembly (I know it needs slight modification to fit in an M24) is it worth it? Does it really make a big difference. 2) Teflon cylinders; does the one for the APS two work in the M24 and do they make much of a difference? 3) Hop up bucking; which kind of bucking is recommended for fps that high?

Again, thank you for your advice and I apologize for all the questions.
 

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Yeah, Dutton is pretty much the guru when it comes to that stuff, as he's got all three top end rifles I believe (Maruzen L96, APS-2, and CAM24) so I'm sure he knows his stuff the best, but you really won't need to upgrade your trigger assembly if you drop that 300% cilinder in there. You'll find that the stock trigger assembly is pretty strong, because I know Blindshot (one of my team's sniper) shoots the exact same modification and he's got absolutly no problem with it so far.
 

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Like Mosin said, the stock trigger assembly should hold up for quite a while. They're pretty well built.

*EDIT*
Sorry, I completely missed your question about buckings. Generally speaking, Hard buckings were intended for high velocity guns. However, hard buckings are not as consistant as soft buckings. At the same time, a soft bucking is going to wear down much faster and need to be replaced more often than a hard bucking. So, the choice is yours, just depends on what you want.
 

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Discussion Starter · #7 ·
I just want to make sure I understand this correctly. So pretty much any part for an APS 2 will fit into a CA (some parts with minor modification) except for the hop up unit. As far as the hop up unit is concerned I need to make sure that I have one made specifically for an M24. The Hop up unit suggested would be a PDI Hop up unit made specifically for M24s?

Everything else, I think I pretty much understand, i.e the bucking and cylinder information. Thanks again for all your help!
 

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Yup, all APS 2 parts are interchangeable with an M24, excluding the hop up units. As a side note, if you do elect to go with an APS 2 cylinder, you MUST use an APS 2 bolt.

As for the hop up, the M24 is one of the rare bolt actions that already can use a standard AEG barrel (which is the reason many people end up getting an upgraded hop up chamber) without an upgraded hop up unit. The only reason I elected to go with a PDI hop up in my M24 is because you can adjust up/down AND left/right. A stock CA hop up chamber will suffice, though.

If you do want to get the PDI M24 Hop Up Chamber, they're pretty hard to find, unless you buy directly from PDIs website where they are somewhat pricey after shipping www.x-fire.org or just recently www.combatdepot.com (out of Ohio) added them to their inventory, something like $52 (on sale) + shipping.
 

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Discussion Starter · #9 ·
Great!!! Thanks again for all your help! I really do appreciate it!

Another question: Has anyone ever used the DB custom 6.01mm inner barrel? Do they really make a difference as opposed to a 6.03mm? Also, since you mentioned that the M24 already uses a standard AEG barrel, does that change when the new hop-up is installed?

Thanks again, you guys have been so much help!
 

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The DB Custom barrels are nice, don't get me wrong, but one "lemon" bb or one with a scratch, and you can kiss it goodbye. Unless your personally check each and every bb that you shoot, I wouldn't reccomend, you won't see much of a difference from .02mm however with that extra room if a grain of sand or dirt were to fall in it wouldn't completely ruin the barrel.

You're more than welcome to continue asking advice on these forums as well, I hope that we've helped you in some ways, enjoy your new rifle and be sure to show us some pictures when she's all up and going.

-Mosin
 

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Discussion Starter · #11 ·
Thanks for the input Mosin. Who makes a 6.02mm barrel and they're compatible with the PDI hop-up unit (which I just ordered by the way, thanks Dutton)?

As soon as I get it all together and such I will definitely be posting pictures for you guys.

Thanks again!
 

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Buying from X-fire.org isn't much of a hassle really. Most of the stuff you would buy for the M24/APS2 is rather small so shipping isn't killer. 10-15 bucks most of the time, last order I made there my shipping was 1,200yen aka about 11 bucks for:
APS,96,M24PDI-ChamberRepairKit
VACUUMPISTON/APS-2
TaperCylinderHead/APS-2

If your going to buy from x-fire make sure you get more than just one thing or shipping will seem killer. But its the best place to get those hard to find PDI items.
 

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The PDI hop up allows both sniper and AEG barrels. Also, I run a Dees 6.01 in my M24. No problems with it at all. I clean my barrel every 1-2 big games I go to, and that's pretty much it. I can also tell you that my gun is hitting 545 FPS with a cut down PDI SPR 200% spring (most people use have to use a 300% spring to get results like that).
 

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Discussion Starter · #14 ·
Good to know. Thanks guys. I went to X-fire.org and it was entirely in Japanese. Anyone know of a good translator because appearantly the one that my PC has only translates a few words here and there? Maybe I'm doing something wrong.

I was thinking about ordering a 6.01mm DB custom. I looked them up and saw some videos etc. and their barrels seem to really give quite an edge in performance. I have currently in my AEG a 6.03mm tightbore and when purchasing those they recommend constant cleaning etc. So I'm already currently accustomed to cleaning barrels constantly. I usually clean my AEG barrel a day prior to an OP and then after everytime I use it. So with that if a 6.01 requires that kind of attention, that I'm already used to. Then I think I'll opt. for one of them.

The spring that comes in the advanced cylinder kit is a 300%. Is that the spring you're referring to Dutton?
 

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As long as you keep the Dees 6.01 pretty clean, you'll love it. As a side note on them though, they require a 500-1000 round break in period, so what I'd suggest is putting it in an AEG and running those initial rounds through it before putting it in your M24.

Also, with the 6.01 barrel, I'm running a cut down PDI SPR 200% Spring and hitting 545 FPS.
 

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Discussion Starter · #18 ·
Thanks Mosin! Appearantly I'm an idiot. I can't believe I didn't see that! Thanks for the info about the Dees 6.01, Dutton. I think I'm going to head in that direction.

By the way, I just recieved the gun today via UPS. I'm really happy with it thus far. Now I'm just waiting on the upgrade parts so I can start the upgrades.

Another question I've wanted to ask is about bi-pods. I've read that most people suggest or rather prefer the Harris Bipods and I plan on heading in that direction. My question though is size. What I've read is the 9" - 12" is the most popular for prone position. Isn't that long though? I don't know maybe it has something to do with body size. I mean I'm a pretty small guy about 5'8" 135 lbs. So to me the 9" - 12" one seems like it would be to high. I almost feel that the 6" - 9" would work better for my size, even in prone.

Let me know though. Since I would hate to order one and then realize that it's too short or too tall etc.

Thanks again for all the help!
 

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Discussion Starter · #20 ·
Dutton, thanks for the input. I'm probably going to go with the 6-9. I don't know, to me it seems as though that size will work better for me, as well.

How did you go about ordering the Dees barrel. Did you have to contact them? Their website doesn't really offer too much information. Then again from my trouble with x-fire.org I'm probably over looking something.

Two questions regarding the gun itself. 1) What's the function of the faux magazine well? I know you can open it but is there a special function? 2) When the magazine is empty and you pull the bolt back and try to push it foward it doesn't return all the way. Is that normal? Does it do that on purpose to act as an indicator that the magazine is empty?
 
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