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Discussion Starter · #1 ·
OK guys.. I just bought an DMR for like 250euros ~ 350 $ . I bought it from my friend which did some upgrades. But Off course thats not all so I am asking you all know.. Here is the "Config"

A&K SR - 25 Full Metal
5KU Air Seal Nozzle for SR-25 series AEG
SR25 Extensive Tappet Plate
Element Hop Up Cushion for AEG
Lonex Hop Up Rubber (70 degrees)
Modify Spring - S150+
Battery 9.6 V ; 4200 mAh ; Dean Conectors
I have optic so thats not needed.

All othes is STOCK !

So it has about 450~500 FPS


Now I am wondering what else should I upgrade ? Or what to change ? And off course I am interesting in current condition,with BB-s . Shall I use 0.36g or 0.43g for this configuration. Off course when I choose to upgrade more I will use 0.43 g for best performance.

In my country its allowed ~505fps and only semi -auto. So take care of that when you put some tips or anything else.
Please give me some advice because I am new in sniper world :)

And off course,from DMR I want RANGE as primary role . If you know what I mean :) Thx !
 

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I facepalmed so hard there... Why don't you look at what you have in the gun in the way of parts in the first place. I WILL guarantee you that throwing money at a gun will not improve the performance more than tuning the stock parts in the majority of the parts. Quite frankly, I won't say much more as I don't condone spoon-feeding.
 

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metallicafatcat said:
I facepalmed so hard there... Why don't you look at what you have in the gun in the way of parts in the first place. I WILL guarantee you that throwing money at a gun will not improve the performance more than tuning the stock parts in the majority of the parts. Quite frankly, I won't say much more as I don't condone spoon-feeding.
Seriously? There are many more respectful ways to reply to the OP then in the manner that you do. You in no way answered this guys question other then telling him that he is wasting his time by putting money into a gun.

Things to consider when attempting to upgrade a v2 to 500fps.

  • sorbo pads on the cylinder head[/*:m:39mq2sxw]
  • air brake piston head[/*:m:39mq2sxw]
  • shim the hopup arm[/*:m:39mq2sxw]
  • teflon tape the hopup unit and barrel[/*:m:39mq2sxw]
  • look for wear on the piston*[/*:m:39mq2sxw]
  • gluing the air seal nozzle to the tappet[/*:m:39mq2sxw]
  • polishing the cylinder and inner barrel[/*:m:39mq2sxw]
  • shimming if the current shim job shows wear on the gears.[/*:m:39mq2sxw]
*If there is a bit of wear on the piston consider ordering another as a backup.

IE look at vindis guide as posted above. Also, there are some good guides here on shimming and other stuff if you aren't already familiar with it.
 

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Discussion Starter · #8 ·
Thx a lot bro.... I try to do most of stuff you said and I saw that tutorials that you linked me. They are full of information I need so thanks for that. I will check link above,the tutorial and I hope I will manage my SR to work good. All I need Is range . As much i can get . Of course all want that from his/her DMR or sniper.

Also if you know what kind of BB-s I shall use ?
0.36 or 0.43g ? I have spring that says in 1post of the thread.
Its about 450-500 fps. Somewhere in there. So what is your suggestion ? thx : )
 

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goldentrigun said:
metallicafatcat said:
I facepalmed so hard there... Why don't you look at what you have in the gun in the way of parts in the first place. I WILL guarantee you that throwing money at a gun will not improve the performance more than tuning the stock parts in the majority of the parts. Quite frankly, I won't say much more as I don't condone spoon-feeding.
Seriously? There are many more respectful ways to reply to the OP then in the manner that you do. You in no way answered this guys question other then telling him that he is wasting his time by putting money into a gun.

Things to consider when attempting to upgrade a v2 to 500fps.

  • sorbo pads on the cylinder head[/*:m:p40dx63b]
  • air brake piston head[/*:m:p40dx63b]
  • shim the hopup arm[/*:m:p40dx63b]
  • teflon tape the hopup unit and barrel[/*:m:p40dx63b]
  • look for wear on the piston*[/*:m:p40dx63b]
  • gluing the air seal nozzle to the tappet[/*:m:p40dx63b]
  • polishing the cylinder and inner barrel[/*:m:p40dx63b]
  • shimming if the current shim job shows wear on the gears.[/*:m:p40dx63b]
*If there is a bit of wear on the piston consider ordering another as a backup.

IE look at vindis guide as posted above. Also, there are some good guides here on shimming and other stuff if you aren't already familiar with it.
Since when is facepalming disrespectful? Most of that stuff is in Vindi's guide that you talked about. Most of the DMR stuff is just a search away on these forums, and has been repeated several times. BTW, the guide you linked on shimming is outdated. And the suggestion for an air break is moot as the sorbo will dampen the sound and the force transferred. I don't really see the need for one but if you can come up with some numbers, I'll believe you. Maybe I expect too much for people to do their own research these days...
 

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The posts was condesending and I'm still going to go back to the fact that you didn't even answer the guys question. I'm also not sure how a shimming guide can be outdated. To my knowledge the concept of shimming hasn't changed. Finally, I wasn't out to convince you of anything so you can believe what you want.

2 - If you want to tell someone to do a search, you must also provide an answer to their question. If you cannot, then do not post on the topic. Brief responses only saying to do a search will be deleted.
 

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The concept of shimming hasn't changed but the way to do it has been. It's incorrect to shim from the spur gear nowadays. I never said to specifically search, but I have to disagree with that rule because then there is no point in searching...
 

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Metallica, almost every time you post, you have a very disrespectful tone. Not sure if that is what you are going for, but that is the way most of the members here are taking it. There is no harm in asking for advice. The OP clearly took some time to read through things and even came up with a parts list. He is simply asking for advice as to whether he should add anything or get rid of somethings listed above.

It is one thing when the OP asks a question, "what should I upgrade?" while doing no work at all. HOWEVER, that is not the case here. We have some guys here who know their shit, and you are one of them. But if you are not going to help out, don't bother posting. Consider this your friendly reminder.
 

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Fuzzy summed it up.

Now, i'm not a huge DMR guy, but I think I should just add some more importance to somethings that have been stated.
Get yourself a NICE tightbore. 6.03mm, Stainless Steel, Prommy(?) made. I'm not sure what kind of budget you have right now, but thats a great place to start.

Next you're going to want to crack that sucker up, and make sure you good AoE (Area of Engagement) which is basically getting the piston hitting the gears as easily.

A good shim job goes a LONG way. Make sure to reshim it, and regrease it.

Shaving off the back tooth I believe, someone correct me if i'm wrong, will relieve stress off the gearbox.

Get yourself a mosfet, and run a lipo to get a good trigger response.

These are the basic methods of how to approach it. If anyone disagrees, go ahead for it, not a big DMR guy, I just use HPA -_-.
Hope this helped somewhat to what you are looking for!
 

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One thing that is missing, you really don't need fps for amazing range. First thing you should do, no matter what, is upgrade the hop system. The r-hop by HS5 is very effective, and the LRB system employed by classic airsoft is also very effective. The r-hop is slightly easier to apply in an AEG platform, and as such, I would highly recommend, if you don't have the tools to do it yourself, buy a Prommy steel barrel and pay HS5 or Skag187 to install an ER-hop for you. Then, work on power upgrades, if you still think you need them. However, with a nice hop system you should get some nice range without needing to upgrade the power too much.
 

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Discussion Starter · #18 ·
Ok as all you guys said to me I am going to accept all of your advices. I will do stuff with some stock upgrades and in future I will want some upgrades.

here is the list I and my friend get .Its not a high budget ,so we are consider this list is ok(with current configuration)

A&K SR - 25 Full Metal

5KU Air Seal Nozzle for SR-25 series AEG - special for SR25

SR25 Extensive Tappet Plate - special for SR25

Element Hop Up Cushion for AEG

Lonex Hop Up Rubber (70 degrees)

Modify Spring - S150+

Motor - JG Replacement High Torque Long Axis Motor (18000 RPM)-M42

Spring Guide - Systema Area 1000 Spring Guide for Ver II Gearbox - 10.50$

Piston - Guarder Full Teeth Polycarbonate Piston for Marui AEG Series - 16$

Piston Head (with bearings and spacer)- Systema Aluminum Piston Head with Bearing for All AEG -22$

Cylinder -Systema ENERGY Cylinder TYPE-0- 15$

Cylinder Head -Systema ENERGY Cylinder Head for Ver. 2 AEG- 21$

Gear Set - SHS High Speed All Steel Gear Set for SR25 AEG
- 17.99$

ThightBarrel 509mm (6.04)- Madbull 6.03mm Black Python Ver.2 Tight Bore Barrel for AEG (509mm) - 39.99$

Shims - MAG Stainless Steel Precision Shim Set - 5$


Battery 9,6 V , 4200mAh , Dean Connector

Parst which dont have a price are ALREADY in the gearbox installed by previous owner !

here is The list . This all cost 130$ with shipping to my country ! So i have that kind of budget and I would like that you guys give me an advice for me.

Is this configuration good ? And I have a question with cylinder.
Will this systema cylinder work with V2. gearbox in SR25. It has long type of gearbox but I think it will ,I just need a confirmation.

Guys please give some advice,I really need this. I am going to do all uprgrades on stock parts as much as I can but As I said I will need some uprades later. From my SR i want range and precision ,about 460-505fps not more. Thx very much !
 

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The piston sucks, the aluminum piston head is a no-no, especially with bearings, and there are cheaper cylinders and cylinder heads out there. You'll need a special SR25 cylinder last time I checked anyone. Some good polish will do wonders on the stock cylinder.
 
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