Marui VSR (550fps 0.2)
 

Hello!

This is my first post, and I have some questions were I haven't found satisfactory information. I want to build an VSR with 550 fps at 0.2gramm, with good precision and hope you can help me.

Innerbarrel:
Is 430mm OK or is it useful to buy 700mm Laylax Bullbarrel and install 550mm Innerbarrel ?
Is the difference between PDI 6.01 and Prometheus/Laylax 6.03 that big ?

Hop Up:
Is it useful to change or is the standart marui hop up good ?
Wich rubber do you recommend for 550 fps with 0.2 ? KM, Firefly, King Arms, Nineball ?

Internals:
For internals I am interested in PDI parts, I think its good quality. But there are 3 different sets. Wich is the most useful for 550 fps ?

http://www.airsoftglobal.com/shop/in...oducts_id=7450

http://www.airsoftglobal.com/shop/in...ducts_id=10908

http://www.airsoftglobal.com/shop/in...oducts_id=9846

Trigger Unit:
I would also use PDI, is it OK ? Is the safety still working after installing a new trigger unit ?
http://www.airsoftglobal.com/shop/in...oducts_id=7449

BBs:
Is Bioval 0.30 ok ?

Please tell me your opinion if you have experience in improving Marui VSR.
Maybe you can also tell me, if I fogot anything.

This is my outfit I use for skirmish, I only need a good rifle :D
YouTube - Military Ghillie Suit
YouTube - Ghillie Test

I forgot something. Wich spring do I need for 550 fps ?

You forgot one thing. You won't be allowed to use this rifle unless you are a lvl3 certified sniper and 18+.

Here in my country its allowed to use spring cocking with 550 fps.
I know that I have to be very careful.
Btw. I am 22, my english is bad because its not my native language :D

User is not from North America.
So standard Canadian information does not apply.

I am from Austria, and only understand german or english. I thought in a big forum there are maybe more people with many experience in tuning VSR.

A Laylax PSS10 170SP VSR10 Spring should help meet your fps requirements.

There are several good threads on all the parts required to upgrade a VSR. Run a search here and you will find them easely.

The TM VSR is a good platforme for sniping. Good luck!

I've tried both the HD and VC of the palsonite set on my L96. I found that I was able to get a lot more consistency with the VC than the HD, but it was relatively close even at 150 feet +

the rest I am unfamiliar with in the VSR so I'll let others answer that for you

Q: Is 430mm OK or is it useful to buy 700mm Laylax Bullbarrel and install 550mm Innerbarrel ?
A: 430 is good... 500mm is optimal for barrel to cylinder volume matching.. 550mm requires a VC piston, bore-up cylinder or barrel porting to be efficient.

Q: Is the difference between PDI 6.01 and Prometheus/Laylax 6.03 that big ?
A: Without a doubt... YES. If you have the money, buy the PDI 6.01.

Q: Is it useful to change or is the standart marui hop up good ?
A: Do NOT change out the standard hopup. The Marui is one of the best of not the best available for a sniper rifle.

Q: Wich rubber do you recommend for 550 fps with 0.2 ? KM, Firefly, King Arms, Nineball ?
A: The stock one will hold up but if you are worried about it, I would buy either the Nineball or the Firefly. The firefly can be a problem if not aligned properly but when it is, it works good. Just make sure you buy a "hard" compound if you are worried about durability.

Q: For internals I am interested in PDI parts, I think its good quality. But there are 3 different sets. Wich is the most useful for 550 fps ?
A: If you are going to use the 550mm inner barrel, a Bore-up set is a good idea. Palsonite or not is up to you. Its just a coating that helps prevent corrosion and make the pull smoother (not by much). Ideally you would probably want a Bore-up and VC combo with a 550mm barrel. 500 and below its not really required as the cylinder to barrel volume is fairly well matched.

Q: I would also use PDI, is it OK ? Is the safety still working after installing a new trigger unit ?
A: Go with a PDI trigger, for sure. There is NO safety with the PDI trigger.

I cant really help you with the BBs. I have never used Bioval before. I would suggest a heavier BB than .30 for 550FPS but they will work if that is all you can get.

Th only thing I really see missing is barrel spacers. Get a bunch of them. 5 or 6 atleast if you are going to run 550mm inner barrel.

My set up is as follows:

PDI Cylinder Set (Barikaru Compo Piston)
PDI V-Trigger
PDI 430mm 6.01 10mm OD Inner Barrel
6x PDI Barrel Spacers
PDI 130 Spring (~400FPS)
BB Bastard .30g BBs

As you can see, I like my setup at about 400FPS. The only things I would change to get up to 550fps would be the piston, to something more durable, and the spring.

Hope that helps.

Thank you very much moto, AoiShikaku and Tokyo Seven!!!