[Whamhammer]

Thank you, what do you think of the CYMA platinum SR-25?

I worked on a friend's CYMA Platinum SR25, the 20", fixed stock version. I liked what was in it, and the only thing that we really had to do to get it shooting the way we needed it to be was to swap the spring, we put an old Prometheus 500mm x 6.03mm Stainless Steel Tightbore that I had R-hopped, put a Modify Flat Hop bucking and nub, and its yeeting .40's just fine. Motor is good, internals are good, shimming was spot on. The only problems with it (as far as I am concerned) is that the cylinder is ported (we will need to eventually get him a non-ported 19 tooth cylinder), and the air nozzle doesn't have an O-ring.

I would either go with one of those, or get the Classic Army M110 SASS, Classic Army product number (AR014M). The Classic Army will need a Neodymium magnet Low RPM motor, and a 24mm air nozzle with an O-ring (standard AR10/SR25, as CA uses a 23mm nozzle, and a longer ended bucking, which you will want to replace). Classic Army uses a Bore-Up kit in the SASS model, standard, so it gives a little more air volume than a standard 19 tooth cyclinder would.

 

[Whamhammer]

Thanks for the info! I will decide between the SR-25 and MDRX then. Thanks for the info.

Just remember, 19 tooth gearboxes are prime choices for long range players for a reason.

 

[Whamhammer]

SR-25s with full volume gearboxes are almost all good as DMR bases. I will say you could probably get away without an o-ring as long as the nozzle tube fit is good. O-rings were originally added to the design due to bad tolerances between the nozzle and nozzle tube causing wobbles. For instance, stock Krytac nozzles have no o-ring and still perform excellently. I can also confirm personal ~1 FPS variance results with no oring. This is since pressure flows in one direction and doesn't "want" to backwards in between the nozzle and nozzle tube. Of course, this is dependant on good nozzle fit, which is shockingly rare nowadays. Another good example are Tokyo Marui AEGs, which are extremely consistent OOTB despite having no o-ring.

I recommend CYMA and Classic Army over A&K due to the Quick Spring Change gearboxes, the fact that they come with mosfets is a bonus as well.

I usually grab a nozzle with an O-ring just as an insurance policy; especially if a new one is needed, like the Classic Army M110's odd decision to use a 23mm nozzle paired with an oddball (longer) hopup bucking.

 

[Whamhammer]

The gate Aster should be mostly compatible. I believe you do need to grind down one post for Cyma Plat gearboxes.

Neither one is inherently better, since both have large cylinders, and the potential for very stable air supplies and barrel groups, the SR-25 is just mostly standard and there are multiple models that work well and can be made to work amazing, whereas the MDR-X has issues out of the box. Not unfixable, not insurmountable by any means, but you have a lot more work ahead of you than with an SR-25, and a lot less support.

I can second the A&K--half decent base to work on and comes with a full cylinder, which is important.

The A&K only has a full cylinder if the replica comes with a 20" barrel, the 15.5" comes with a ported; a friend of mine bought an A&K 15.5" carbine version and it had a port in it. A&K's are still a PITA, because of their non-Quick Spring Change Gearbox.

A full cylinder SR25 has about 15% more volume than a full cylinder V2 (M4/M16, etc.) will have, the Classic Army M110 SASS versions and its factory equipped a cylinder bore-up kit, even more so! Thats a notable difference when one is working with Cylinder to Barrel ratios, and heavy BBS. A CYMA SR25 with a port is going to be comparable in volume to a full cylinder M4, but its advised to buy a full 19 tooth gearbox cylinder (I think its silly that any V2.5's don't come with a full cylinder).

The major reason why the SR25 is the "gold-standard" for a DMR platform is that extra air volume that a 19 tooth piston gearbox provides, over other possible DMR platform's, M14 EBR included suggesting that the SR25's don't have an inherent advantage is like suggesting that (all things considered equal) a .308 caliber rifle won't have an inherent advantage over a .223 caliber rifle.

 

[Whamhammer]

I was going to get the Gate Aster V2 gear box to semi auto lock it, will that be compatible with the SR-25?

Have you looked at the Perun Hybrid, and the optional trigger "clicker" for it? The Hybrid is gaining in popularity over the Gate Opticals, and the clicker gives a trigger "break" that the user can feel.

 

[Whamhammer]

I will look at that. Also for the MDRX, I have heard it had a larger cylinder compared to other AEGs, would this be beneficial for use it as a DMR?

Per Silverbacks Website, its only a 14 tooth cylinder, and a 15 tooth sector gear, so I am going to say that it doesn't have a larger cylinder.


MDRX Piston (16 teeth) – Silverback Airsoft (silverback-airsoft.com)

MDRX Gear set 18.1 – Silverback Airsoft (silverback-airsoft.com)

 

[Whamhammer]

Any AEGs could be turned into a DMR. And indeed cylinder volume is overrated. While it surely helps on long range build, it is not everything. A conventional AEG cylinder volume is capable of achieving DMR purpose just fine. Barrel and bucking combo contributes more on your accuracy and range.

If you set your eyes on ICS because of how good it looks, then get it and upgrade it eventually. As Plazmaburn said, ICS is easier to upgrade stuffs because of its split gearbox design. On that topic, may I suggest you to check the new Arcturus CAT line? They also have split gearbox design and perforated body if that's your kind of thin

Air Volume is certainly NOT overrated, it is misunderstood, and under appreciated.

Saying that air volume is overrated is being intellectually dishonest, and making a DMR (or even a sniper) isn't just a matter of putting in a powerful enough spring to bring a replica to DMR Joule range, tuning a hopup chamber, and yeeting bb's at an opponent. Having a top performer needs to be a holistic approach, and having a proper cylinder-to-barrel volume is a part that should NOT be ignored, and is an important role to the crafting.

There is a reason why VSR10’s and SR25’s have a large cylinder capacity, and it's not because some Chad airsoft engineer wanted to flex; there is this thing called physics.

Without enough air volume, a higher rate spring is needed to compensate for the system’s inadequacy to push the bb. There is more strain on the battery, motor, gears, piston and cylinder assemblies; the result is more waste heat, stress and wear on physical parts, noise and vibration. Tighter tolerances on build quality are needed, and more maintenance. Increased vibration impacts precision and accuracy and need to be addressed in order for the platform to be competitive.

Greater air volume systems are able to be more precise because of the lower stress of the system, than a higher stress system. It's a very simple principle to understand, and should not be ignored.

If air volume was overrated, OEMs wouldn’t use 4 or 5 different port arrangements on their cylinders, they would just use one or two, and slap a heavier spring to offset.

To say it is overrated, and not to account for the costs of NOT using a higher air volume system, is to not properly educate the community. Its science, not magic.

 

[Whamhammer]

Just checked silverbacks website. It says a 26mm diameter cylinder which is 19% larger than standard AEG cylinders.

OK, I just took another look at the exploded view of the setup. Thats a totally proprietary setup, so thats how they are t the doing a 26mm ID cylinder, so it would have a good deal more volume than a standard V2.

The issue that is going to be a question is how will that setup, as proprietary, work in the long run? Very well could be bulletproof, but if parts do break/wear how easily will it be to get the replacement parts? Can’t say for sure, until someone does an actual comparison of the parts if the gears piston (not piston head) and other parts will be in common with “standard” parts, and how many are going to be Silverback direct. I do that now my with my Classic Army M110 for its ECS tr

My thought would be, if I was to buy one, is to buy all of the non-common source wear and tear and critical parts from Silverback now, to have in stock, just in case something needs replacing

Just checked silverbacks website. It says a 26mm diameter cylinder which is 19% larger than standard AEG cylinders.

I just did some additional checking of the site, and it does claim a 26mm cylinder (hopefully internal diameter) and checked the exploded diagrams. The system is using a propriety gearbox setup, notably the air compression area. I will presume that the system has been tested enough in development that it is a solid system and doesn't have any hidden surprises that haven't been discovered yet (I would say this on any new/newer system that isn't using standardized/proven components). I appears that it would likely be a good system, all things considered equal.

The proprietary gearbox parts are going to be the rub for me, as if this product isn't a good seller, or Silverback does a bad job with support, getting replacement/maintenance parts could be an issue. With my Classic Army M110, I have made a point to get all critical parts to the operation of systems that aren't common replacement items ( the ECS trigger unit, the sector gear that has a detection magnet for the ECS, selector plate, etc), I am in the process of getting replacement Classic Army Bore-up Cylinders for the M110, as they are somewhat of a unicorn. If you decide to go with the Silverback, I recommend making point to find/perform an analysis, of what gearbox components are proprietary, and order at least a set, in order to stock for any future repair/replacement needs. The last thing that you want is after a year or two, to have an expensive Silverback shaped paperweight.

Definetly find any user/support groups, to stay ahead of the knowledge curve, as well.

 

[Whamhammer]

By your same argument, there is literally no reason to even use an AEG or gas rifle/pistol in the first place when HPA is superior in all ways. (It's not from a logistical standpoint.) Thus all of the manufacturers would be putting out guns like these.
NEO.1 – HS:962:SD – Monk Customs USA – Builds (monkcustoms-usa.com)
DYE M3+ PGA POP – DYE Paintball
Eclipse CS3 Midnight – Planet Eclipse USA

(It kills me that all the paintball guns are starting to look more like airsoft guns and more airsoft guns are starting to look like paintball guns. Most paintball guns now all look similarly the same.)

Then on that same notion we all would also be rocking 80 or 90/4500 tanks on our backs or guns. (Now that I think about it, a 24oz CO2 tank would technically hold more air, but you would need to deal with the liquid to gas endothermic process though.)

(Holy hell its been a long time since I dug into paintball, LOL JT still pumping out the Flex line of goggles. Those will never die! LOL)

Anyway, you shouldn't be hyper-focused on strictly what has the most air volume. It hideously gives you very few options.

That was faaaaaaar from what I was saying, I am not sure if you are being hyperbolic or not, to be honest.

I am also not hyper-focused on air volume as much as I am perplexed that some people are too determined to discount it. I am even more perplexed on how people wont acknowledge the advantages of the 19 tooth gearbox for high powered heavy BB use, and the down side of using a standard type gearbox.

If you want to use straw-man arguments, instead of actually speaking to the points made, I can’t help you but you certainly arent helping anyone either.

If you want to get past straw-man tactics, or appeal to emotion, and speak to what I mentioned, using logic, and earional, explained points, I am more than happy to discuss.

As far as options go, what is wrong with chosing a 19 tooth gearbox SR25/M110 platform ? Do you have something against it? I quite like it, honestly.

 

[Whamhammer]

Does anyone know what speed loaders will work with SR-25 mags?

Not sure what you mean, the mags arent all that different from any other midcap in how they are fed.