psuedo dmr(spotter rifle) vs. DMR

[Frost]

So at a recent game I encountered a few nice fire fights with people using pseudo dmr's and me using my dmr. While i was usually at the end of their range and they within my kill zone I noticed there bbs were still only feet in front of me and even got hit a few times. This caused a question in my head the benefits and cons of a pseudo dmr vs a DMR. Obviously the pseudo dmr can be used on full auto while the dmr can not. Also the dmr can be over 400fps with .25 while the dmr can not. When it comes to range it appears that the dmr only has a slight advantage though. I would like to hear others thoughts and opinions on this matter.

[Dominum]

That depends on the DMR and how far above that FPS you build it. One with barely more range has no real advantage, one built to have considerably more range does, assuming he is outside of the range of the pseudo DMR.

[Frost]

I see. Let me be more specific about my situation. I have an a&k sr-25 dmr. Currently shooting 448fps.with .25s. I have a sp155 spring and an er hop. I effectively reach 300 feet roughly. The gun was built by a reputable tech within the Aosc and has been upgraded to dmr specs. Either build I decide to go with I plan to install a Prometheus tighbore 6.03 barrel with an er hop. My question is after my new barrel and hop instal should I go with a heavy spring and gears for a stronger dmr or should I install barrel, hop, and a lighter spring for a pseudo dmr. I theorize with those upgrades my dmr could reach 350 feet effectively, but if I go with the pseudo build i theorize I can maintain 300 feet while being able to access full auto use. I am wanting to know others opinions and insight on this matter. I know people will say it is player preference but i am asking for effectiveness.

[Felix]

If you want to reach out and touch them, go "DMR"
Full auto might mess up that hop, plus you can kill someone just as effectively with 2 well placed long range shots that 20 lobed shots.
Loosing full auto isn't a bad thing.

[Frost]

Well put felix. Never considered the hop up wear. Out of curiosity what are people's ranges with their dmr and/or pseudo dmr?

[Star_folder]

Full auto is a tricky thing. Given that both DMR and PDMR are fully upgraded, the DMR will only have 100ft of range on the PDMR. And that's if you start engaging at max distances. Most fights start at 200ft, within the range of both DMR and PDMR, which means their full auto shots can reach you, you no longer have the advantage of range. You have to rely on bb speed to get your target, because bb volume won't help you as much as it helps them. Either back up, or use your team mates to secure the kill.

You are at a point where you can see an advantage over other people's guns, their PDMRs and such. But, that advantage is lost if you engage them within their effective range. You'll need to figure out some way to engage them so you have the upper hand.

The hop up does not wear any quicker on full auto than it does on semi. These patches are built to last millions of rounds.

417 has 250ft of effective range with .3s
L85 had 400ft with .4s, Needs to be retested as it has been upgraded.

[TokenTech89]

My dmr is reaching 250 feet easily, but the fps is being worked out now. but someone elses psuedo dmr is getting no farther than 150 because of the hopup.

Star, wouldn't the fact that with a dmr the full seal can be resealed after the shot has been fired, vs. full auto where the seal is still open from the previous shot, resulting in the varying range of the bb projectory?

[Star_folder]

The bb leaves the barrel long before the seal is broken. So that does not effect the system. Rather, the bb should leave the barrel long before the seal is broken. Issues with tappet cams being too large, a rate of fire too fast (we're talking 60+rps), or jamming in a barrel. Tappet plate cams aren't too large unless you do custom work to make them too large, a rate of fire that fast is basically limited to something with a DSG in it, so it wouldn't be a DMR, and if your barrel is jamming... well, clean it.

[Dominum]

If I were you I would make it a longer range DMR. With PDMRs the enemy only has to gain a little ground to be on par with you, whereas with a long range DMR you can often engage the enemy from a position that forces them to advance across open ground for 100' to be close enough to shoot you. This essentially makes you the arbiter of their fate, so long as you act with prudence and position yourself to take advantage of poor enemy deployment, advantageous friendly deployment, and features of the field and terrain.

[Romba]

Being that this thread is discussing DMRs, let me ask a question.
I have a bone stock KWA M4. I want to turn it into a DMR. Can anyone give me a comprehensive parts list that are necessary to get to DMR level? At least what is necessary, but not necessarily all of the "it would be nice to have this."
*coughcough Star coughcough Dom*
'Twould be much appreciated.

Some of my first thoughts are
Flat hop or R-Hop
Larger spring (of course)
Tightbore extended thru a suppressor (maybe)
New motor of some sort (to pull the larger spring, or is the stock one ok?)
New gears (ie high torque, high speed... Is it necessary?)
sorbo job in the gearbox EDIT: not sorbo... What is that stuff you can pad the gearbox with to supposedly reduce noise?
mosfet

What else?

[Felix]

You need at least
Motor
Gears
Piston
Spring
Spring guide.

What helps immensely is
rewire
piston head
cylinder head
TBB
Hopup
Mosfet

[Romba]

What kind of motor and gears? High torque? What kind of piston? Polycarb? Aluminium? Could you please give me a little more detail? Thanks.

[Star_folder]

@Romba

For your KWA M4, I would get:
Lonex Piston
Lonex Piston head
Lonex High Torque Motor (Orange) (A2)
SHS 9mm bushings
Lonex/SHS/Prometheus Air Nozzle (brand really doesn't matter as long as it has an o-ring)
I would find a set of 20:1 or possibly a little higher. Though I'm not sure on the ratios that don't require a half tooth piston. KWA has a strange issue where their axles are off spec from the TM standard, so gearsets don't quite sit just right, and don't mesh just right because of it. Lower torque gearsets will help to release some of the pressure that will build up because of this. I wouldn't get a normal 18:1 ratio because of this.
I love extreme-fire mosfets, and I highly suggest them. Steevo makes good mosfets if you don't have the money to spend on one of Extreme-Fire's.
As for a barrel, nothing smaller than 6.03, and nothing longer than 509. It can be shorter if a 509 is too long, but I wouldn't go shorter than 455 for a DMR.

[Romba]

Thanks Star! I appreciate it. What size spring would you recommend?
EDIT:
Okay. Lonex stuff is out of stock like everywhere... Why specifically lonex?
Any other usable brands?

[TokenTech89]

I would say minimum M150 or SP160