Classic army m24 cylinder problem

[the man behind the rifle]

I know their is tones of threads titled exactly like this but tell me if you've heard this one before. Before I start rambling I advise anyone reading this that I know my gun and have done I tone of research on the problem but determined this is big enough to require veteran advice.

The problem is, my gun has a hop up issue and now I have narrowed down the problem. I don't think that there is enough clearance in my pdi VC m24 cylinder for my trigger units spring guide stopper because of this I have had to mount the trigger loose and then tighten all the screws. This Is what lead to the hop up problem. If you recall I had a thread asking for help with my v trigger this helped confirm the problem because it wouldn't mount properly because of the cylinder.. I know this may be a bit hard to understand but the cylinder is forcing the trigger forward. To fix this I pushed the hop up unit forward in the receiver and before that had a spacer that I made in the cylinder forcing the spring guide forward. Their is only one possibility that i can think of,the cylinder isn't compatible. the rifle still works with the stock cylinder, so the problem must lie with the cylinder and this is where I need expert advice. Should I buy a pdi aps2 cylinder and use the internal cylinder parts I already have along with an aps2 handle . Does anyone think it would fix the problem by offering more Clarence for the spring guide stopper ? Thank you for your time and opinions.

Just to clarify here is my build

Ca m24 Military

Pdi VC cylinder set for m24

Pdi 240% spring

Pdi hop up With w hold bucking

6 spacers

6.05 pdi 515mm barrel

Stock and pdi trigger units

[the man behind the rifle]

To specify cause I think that I'm not being very direct, the spring guide is to far backwards and is pushing the cylinder and the hop up forwards giving me my accuracy problem. Even when I push the hop up back and cycle the bolt the next time I fire the cylinder pushes the hop up unit forward again. It's almost as if the handle boss is not weeded far coward enough in the cylinder. Should I buy a aps2 cylinder and hop that will fix the Clarence problem or buy a replacement cylinder and hope it was a problem.

[CDN_Stalker]

Confusing all to hell as far as reading goes, but will say the APS2 cylinder and bolt handle aren't compatible with the CA M24 without mods.

I'm an expert with the CA M24, but have zero experience with V trigger assembly, just the stock one. If you clarify all you posted above, I might be able to understand better and help you sort it out, but after a few re-reads, still not getting your issue and descriptions (linking rear cylinder issues to problems with your hop up unit?!). BTW, what's wrong with the stock trigger assembly? Set up properly it's great. I see one issue you have is a PDI spring, that's a major problem right there.......

Best off the top of head guess, your retaining screws holding yoru hop up unit to the receiver are causing problems. Inside the cylinder and itself shouldn't cause the hop up problems you are having, unless your new cylinder isn't compatible with the existing hop up unit.

[lupo]

Originally Posted by CDN_Stalker

Best off the top of head guess, your retaining screws holding yoru hop up unit to the receiver are causing problems. Inside the cylinder and itself shouldn't cause the hop up problems you are having, unless your new cylinder isn't compatible with the existing hop up unit.

Something like what CDN stalker suggested here. Also did you get the PDI cylinder set that is meant for the PDI hopup unit as the cylinder heads for the PDI hopup are slightly longer. I just had an issue with mine after installing a PDI hopup unit I had failure to fires and inconsistant shots due to the original head not being the right length.

[the man behind the rifle]

Again I am sorry for the confusion but I do t fully understand the problem either. The trigger that is and has always been used is the stock trigger and I am using the pdi palsonite cylinder set VC for the ca m24 with all the parts that are included with it. The v trigger never worked but it is because of the cylinder. You know how the handle boss stops the spring guide from hitting the back of the cylinder and offers a space for the spring guide stop to be inserted. Well its almost as if it's too short. When the trigger is assembled on the gun the stop pushes the the spring guide forward because its in the way and the entire cylinder upwards . When the gun is fired the cylinder moves the entire hop up unit forward inside the cylinder this is because the cylinder has the extra preasure of the stopper pushing it forward. What I am sujesting is that the cylinder itself is faulty and was wondering if the aps2 cylinder would work better inside the rifle or buy another palsonite pdi cylinder for the m24 and hope that it works. .

the hop up and scope are all fine and I have checked hundreds of times that they are installed correctly it is because of the cylinder when I use the pdi cylinder and all it's parts the bbs start going up to the left every shot and when I use the stock cylinder set up it not only flys straight but the hop up unit isn't being pushed forwards . If the problem is still to complex to understand I can post pictures to show you exactly what I mean. Again I am sorry for the confusion and thank you for your time and input.

[CDN_Stalker]

I'll keep re-reading this (still confusing, handle boss is the end cap of the cylinder behind the bolt handle, nothing to do with trigger assembly), but notice what I said earlier, the APS2 cylinder isn't compatible with the CA M24, the nozzle and rear shaft (where the bolt handle and boss go) is too long to allow the bolt handle to fit in the receiver/stock notch........

[lupo]

I just noticed on your list of upgrades you have 6 spacers listed. Are these the PDI thrust rings that go onto the spring guide? If so I would suggest removing all but one , resassembling and retesting. Also , reading through your info. Your hopup unit should be secure and tight , it shouldnt move around at all. The cylinder shouldnt be able to push the hopup further into the gun. If it does the problem is that the trigger unit isnt in the right position. The CA m24 trigger units do have a bit of adjustment to them so if the cylinder is too far forward you need to pull the trigger unit further back.

[the man behind the rifle]

I was aware what a handle boss was and I understood your advisement about the aps2 cylinder I was just repeating my original question. To answer your question lupo no, I don't have any thruster rings or anything of the sort in the cylinder and the trigger is pushed backwards all the way but I have always had it it this way and the current space problem is with trigger adjusted as far as it will go. Sorry to both of you for consuming your time but I just want both of you to know that I do know my stuff when it comes to this gun but it's hard to explain given the nature of this problem. If there is one thing that this guy has taught me it's pactience and persistence so for now all keep trying but if I can't seem to find away all buy a new cylinder for the m24 and see if that helps.

[CDN_Stalker]

One thing to know about this rifle, it'll always toss a curveball at you regardless of how well you know it. It did it for me for years, and I have one of the first V2s in the country, got it third-hand back in 2003. Just keep playing with the adjustments, give us as best info as you can, clearly, we may be able to eventually help you solve the problem without costing you more money. Are you using the mag to align the hop up unit? Are you using the mag to align the barrel/receiver with the stock? Both are mandatory to get everything set up right. I feel dumb for asking, but I don't know your level of expertise with the platform, so I need to ask....

[the man behind the rifle]

I would say I am pretty much an expert on this rifle I though I knew every trick this thing could pull... But like you said it threw a curve ball and it hit me smack in the face. Oh well I'll take having the occasional having to stay up till three in the morning to get every shooting properly for its marvelouse appearance. I do use a mag to align the hop with the receiver I am sure that's aligned properly I know it's either the receiver or the cylinder that's causing this. All come bag when ever I have an update but for now i am just going to strip the rifle down to the barebones clean lube and see what I can do. Thanks again for you help