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Discussion Starter · #1 ·
Hi, I will order the G&P m14 DMR and was wondering what upgrades I should order for the replica to have an effective range of 250-300 feet if possible. Also I was wondering which bbs to use and of what weight.

My current build list=
Prometheus double torque steel gears for V7
G&P M160 DMR motor
Guarder SP140 spring
Prometheus 500 mm 6.03mm inner barrel
Systema hop up bucking
 

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You wont get 300ft out of that weapon ever! You need to keep it realistic.
Beyond 240ft there are too many environmental factors that come into play.

And even as a DMR what are your field regs for FPS?
 

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ok 550fps.. that is pretty hot for an AEG but if they allow it...

First... read the Holy Grail of DMRs
http://www.airsoftsniperforum.com/phpBB/phpBB3/viewtopic.php?t=889

secondly make sure you buy an AB MOSFET so you can get rid of the anti-reverse latch.

your other items should work fine...

and finally look into a lipo battery you wont need high voltage... I use 7.4v-20c they last all day long...
 

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Eh it's possible to get 300ft or very close to it with an extremely upgraded AEG, I know of two guns personally that got around or at that range with shooting over 500fps, because I own them ;). Naw actually I downgraded mine because of the stress on the internals.

With the right upgrades there's no reason why your G&P M14 can't shoot 240-260ft effectively.

But it's going to come at a price. And that means you're pretty much going to have to completely overhaul the entire gearbox.

What I would do first is start with your accuracy upgrades which I mean by your hop up unit, bucking, nub, and inner barrel. I swear by prometheous inner barrels personally. (EDIT: I read you already got this part down)

Then work on your compression by replacing the cylinder, cylinder head, piston, and piston head. Such as a bore up kit.

You will also need to re-enforce your GB. So buying a re-enforced shell will help. Next work on upgrading the motor (go high torque), gears (torque up gears) and the appropriate spring for what you want to shoot at.

Finally you'll want to re-enforce the rest of the internals or as you see fit.
 

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gunny87 said:
I swear by prometheous inner barrels personally. (EDIT: I read you already got this part down)
Second on the prometheus barrel. They are very nice, and come at a cheap price when compared to the PDI barrels. Good choice. Also, I see you are going with a systema bucking. Another good choice. I would stay away from the prometheus bucking as its a complete waste of money. Just a heads up ;)
 

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Fit one of these kits and you can reach out to 900metres easy ::)

http://www.smithenterprise.com/products02.html

Meanwhile back in reality, in all seriousness, an AEG gearbox isn't going to last long at 550fps, as they are just not designed with that sort of pressure in mind in repeated use.

Far better to use a lower power, and work on your field craft to get you the extra 20yards you'll lose.

If your dtermined to go to this power then brace your self for an expensive ride, as your going to need super strong everything in the gearbox and hop, with a huge dollop of skill putting it together, with luck sprinkles, if you want it to be anywhere near BA accurate and remain in 1 peice for more than a couple of skirmishes :-/
 

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Discussion Starter · #9 ·
I was told that all the parts I need are the listed to reach 275 feet. This guy on ASF sent me a msg, his name is namloot

QUOTE HIM
"You would put in the following parts:
Prometheus double torque steel gears
G&P M160 DMR motor
Madbull M150 spring
Prometheus 6.03mm inner barrel
Systema hop up bucking

The following helps:
Extreme-Fire SW-S MOSFET switch
30A fuse upgrade
Deans connectors

Use a good 9.6v, hi peak discharge battery.

Use the best BBs you can get like Maruzen Grandmaster 0.29g BBs.

Good luck"

ME: Is there any thing else I need to replace? I am willing to spend more money for compression parts, piston, piston head, cylinder, cylinder head, shims, new hop up unit, anything to get the same results.
Also is the TM hopup in the G&P M14 DMR, or is it just the same type? And how do I make it semi-auto to make it field legal?

HIM: That's it. G&P internals are very good (except for their gears). The G&P hop up is a good TM clone, it works well.
 

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Here is a link for the semi-auto only thing: http://www.airsoftsniperforum.com/phpBB/phpBB3/viewtopic.php?t=116

Read through the whole thread in the link. I believe there is a certain method for the m14 further down the page.

As for the rifles ability to reach 275 feet. Maybe you know this, but to reach out that far, one can not expect to just drop in the parts and expect to get wonderful performance right away. I recently upgraded my bolt action rifle, and despite all these "fancy" parts being put in, I had to tweak the rifle for hours and hours
before I was getting even decent performance. However, after some time, I was making some progress. Just realize even with all the expensive and high quality upgrades, some tweaking and other things must be done on your part too ;)

Also, as for reaching to 275 feet with .29s, they seem a bit light. I would go with some heavier weight bbs. I know with my rifle, .28s curve after 200-230 feet or so, and groupings are not as tight. However, thats just in my experience. You can use whatever bb you would like and its mainly what suits you best ;)

Good luck, and I mean no disrespect. Just trying to help you out.

Fuzzy
 

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I personally don't even try to tune my DMRs to that level of stress..

but there is something important to remember here...
There is a huge difference between "Effective Range" and can you reach distance X.
You might be able to tune your weapon to Hit targets at 300 feet 9 out of 10 times... But I doubt it and that is speaking solely from my own experiences.
Airsoft just does not turn out that kind of performance.

220 ft - 260 ft yea absolutely.
I say yea cause I get 60-80% accuracy at that range.
but understand that is also due to player ability and hold-over knowledge and all sorts of other things.. not just the weapon.

The number one thing I advise anyone trying to improve the range and accuracy of their weapon system.

"Weapon ability and player ability must be in sync with each other."

It has been said on here before Field Craft counts as much as if not more than a well tuned weapon.

But should you get the weapon tuned to your liking here is a guide for target silhouettes that we use. This has helped my entire team improve their accuracy.
 

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While I have a bolt action rifle compared to a m14, I believe this applies. Most think sniper rifles need a super high fps to compete with the competition. However, I have a rifle that has been used for quiet some time. The spring has worn down greatly and no longer shoots the stock 500 fps. Now its in the low 400's. I still get greater range than some of my friends who have aegs that shoot 400 or greater fps. This is due to the upgraded hop up chamber which provides more consistent and powerful hop to my bbs. It helps increase range when combined with my tightbore barrel (really helps make consistent straight shots). I use .4s despite the low fps output compared to some other really powerful strong rifles. I manage shots in the 200-230 range. However, thats about the furthest distance due to the fact that the rifle just cannot produce enough "uumph" to get the bb there. Thats where I could use a heavier spring to help increase my range alittle. However, with the right upgrades the rifle shooting at 400 fps goes further than it did when it was stock and shot at 500 fps.

Here is an example of what you could do:
You could put in a 450 fps spring and with making sure you have good compression, the fps output could be better (around 475). Less wear on the internals without losing much fps. My point is that fps can help with range but you do not need a rifle shooting 550 fps to hit long range targets.
 

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Fuzzy is dead on..

My DMR shoots 450fps w/ .25g BBs... although I shoot .30g when I play.
I tune the GB every 3 months regardless just because I'm anal that way.
I am still using the original GB going on 2.5 years now.. sure I have replaced internal parts new pistons mostly.
but I have never stripped a gear including the pinion gear.

so yes it is totally possible to get great range (220 - 250ft) out of a 450fps AEG.
 

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Discussion Starter · #16 ·
So fuzzyh, your saying upgrade the hop-up and barrel to the max to get the most effective range out of the two and if I want more range, move to a stronger spring? I guess I will stay in the 470s range, using a SP130 and work greatly on compression. I just need help on that, and what nubs/buckings on the hop-up. Thanks for the help guys.
 

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Yeah, I would stay around 450 -470 fps range. Less wear on the internals which means they will last longer. As for the barrel, a prometheus should do fine as well as any other nice barrel such as a madbull, etc. If you have the funds, the PDI barrel is the best but its really expensive. For buckings, I use soft ones, but they will wear down faster. I have had some great success with the KWA bucking so far. Guarder ones are nice too, and I have heard great things about the systema ones. As for nubbings, you can just use the one that came with the bucking. (kwa one does not come with one though) Or you could get a SCS nub, but now they are all out of stock. The Polar star concave spacer is basically the same thing as the SCS, and I have one but have not used it yet.

Once you get the hop up pieces (barrel, bucking, chamber, etc.) inside your rifle, you will be very pleased. Not to mention, with a 470 fps set up, you will have a solid DMR in my opinion.
 

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As for compression... DO the do it your self mods in Vindi's Holy Grail of DMRs!!
They're Cheap. and Really effective. And you may find you will be able to get away with a lighter spring.
because better compression will add FPS.

example...

My indoor CQB weapon is a TM Beta Spetz.
It shoots 320fps with .25g BBs
But here is the KICKER.
I have an M90 spring in it with a Tanio Koba barrel
and that little bastard reaches out to 180ft.

Compression is GOD in our weapon systems..
 

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Discussion Starter · #19 ·
Thanks for the quick replies you guys. So my refined list is:
Prometheus double torque steel gears for V7
G&P M160 DMR motor
Guarder SP130 spring
Prometheus 500 mm 6.03mm inner barrel
Systema hop up bucking/ Firefly Hard
PCS/ H-Nub

Bioval .3g I guess

I heard the soft buckings perform better than hard, but don't last as long, can any of you elaborate? PCS VS H-NUB?

Also, I still need help on what to add on to the parts list to keep the replica stable.
 

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I would use the PCS over the H-Nub. I have heard that the PCS or SCS is way better than the h nub because the PCS is shaped around the bb. Also, the soft buckings will wear down faster but they do perform better while they last. I use soft buckings and do not regret it one bit. Just buy a few in case you have to replace one later on. I have tried numerous buckings and its basically trial and error to see what works best for you and your setup.

.3g bbs seem like a good choice. Nice and heavy ;)

Edit: Also, make sure the bucking is aligned properly in the hop up chamber. Otherwise, you will get no hop on the bbs, and adjusting the hop up will not do anything. Simple mistake, but makes a huge difference. Believe me, nothing like blaming the bucking for my own mistake
 
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