Upgrading my G&G GR16 Carbine for More Distance and Accuracy

[MALTV]

So I'm planning to, like i said. Give my gun More FPS and Accuracy. I have a few questions though.

1. The inner barrel length is 357mm and the Diameter is around 6.04mm (Not completely sure) I'm having trouble finding a site that supplies this type of barrel. I don't know if your able to buy longer barrels and cut them down to size or not, so some insight into this would be greatly appreciated.

My second question is what do i need to get more FPS out of my gun? Right now it fires around 360, and I'd like to get it up to about 380-400.

Any and all feedback is welcomed. Thanks!

[Hightimes]

http://www.airsoftparts.ca/store2/in...roducts_id=301

http://www.airsoftparts.ca/store2/in...roducts_id=887


These two items should get you to 400 fps, if not more. depending on your others interals

[MALTV]

Originally Posted by Hightimes

http://www.airsoftparts.ca/store2/in...roducts_id=301

http://www.airsoftparts.ca/store2/in...roducts_id=887


These two items should get you to 400 fps, if not more. depending on your others interals

Perfect, one question though. The barrel length is 363mm and my barrel length is 357mm. Will that make any sort of difference? if so can/should i cut it?

[m102404]

For accuracy you need...consistency:
1. Compression...this has more to do with how well the mechbox/nozzle/hopup is setup...and is dependant on working with good parts in the first place. If your compression is good...then your shots should all come out with a consistent power/speed
2. Hopup application...this has to do with your hopup rubber, hopup nub, and inner barrel. A 6.04 is already considered a tightbore...you won't see much difference in going to a 6.03 if that's the case. Much smaller than that and you start to get into potential issues with jams/etc... I personally like the Guarder Clear hopup rubbers...they've always performed well for me. Others have their own preferences.
3. Inner barrel...needs to be uniform in diameter all the way down it...needs to be smooth and free of scratches/bumps/nicks/etc... Quality pays off here.
4. Quality of BBs...the polish, finish and consistency BB to BB is key. BBBastards are very good.

* you need very precise measuring tools to measure the diameter of an inner barrel accurately. If you've got a good set of calipers you can measure the outer diameter...then measure the thickness of the barrel wall...and work out the inner diameter. You'd obviously measure that several times and average out the readings. You're potentially looking for a 0.04mm difference (6.08mm standard vs 6.04mm tightbore)...which is very, very slight.

You could also turn a go-no go slug on an accurate lathe...but again, you need accurate tools to do so.

*** the be all and end all isn't a tightbore or not. The biggest gains/factors will be compression consistency and consistently effective hopup application.

You can cut any barrel down to length...and it'll work well as long as you do a good job on it. A lathe is obviously the easiest route to go...takes just a couple of minutes (mostly setup time). Hacking it off by hand...leads to some pretty interesting things. Not that if you have a barrel that has a coating in it...either you should ensure that it's cut very cleanly or else leave it alone.

With your gun safe (no battery/bbs) see how far down your inner barrel is down the outer barrel. 363mm is kind of a standard M4 length and unless your outer barrel is funky...you should be able to fit the 5-6 extra mm's in there.

For FPS...you need a stronger spring. A Modify S110 in a nicely setup rifle (good compression, nice barrel) will tend to shoot 360-385fps w/ 0.20's. A Modify S120 will tend to shoot 390-420 in the same setup.

That said...your motor, battery and gearing setup has to suit a higher powered spring. Most setups will be fine with a minor bump in power.

* short answer
- stick a S120 spring in there...if that shoots too hard stick a S110 spring in
- tune up your compression when you change your spring...change your hopup rubber to a good quality one...shoot it with your barrel...try a tightbore if you feel like being sure you're getting the most out of it.

[Hightimes]

Make sure your barrel is 357mm, there should be more than 6mm for you to put the 363mm in your gun..
Usually the longer the barrel the more fps and accuray you get..
You shouldn't cut the barrels.
Good luck..

[MALTV]

Does it matter what type of Rubber i use? I've looked around and there's a bunch of different types like soft, medium, hard and even different degrees. Is there any rubber in particular i should be looking for my type of an AEG.

[Dynamo]

get a Prometheus 6.03 barrel. they have the best circularity out of any other manufacturer out there.

[L473ncy]

I think you'll want either the Prometheus Purple (soft) or Guarder Clear rubbers.

Different companies will use different names to market their rubbers but just keep in mind soft is better for low FPS setups (generally agreed upon to be sub 400FPS) while hard is for higher FPS setups (generally we're talking >400FPS here). So basically "soft" hop up rubbers should be the ones dominating in Canada for the most part.

For accuracy, work on the compression parts. Try to get perfect compression basically so that you'll be more consistent shot to shot. Distance can be helped by using heavier BB's. .28's perferably.