Need help choosing a tightbore
 

Alright I'm actually look for something in a 6.04
My prometheus tightbore seems to have come fucked from factory, looks like someone pulled sandpaper through it. And it's not my BBs because my G3's prometheus tightbore is still good as new. As you can imagine I'm kinda pissed off that I received a dud.

So the options are KM, Systema or Guarder, 363mm. Any relevant input is appreciated :)

PDI 6.01 is the best. Aluminum construction, good QC, slightly better than my Prometheus 6.03.

My KM inners were okay when new, but after the teflon wore off from use, the accuracy went way down. It wasn't that noticeable to the naked eye, but when you use a scope and compare groupings when new versus after 20,000 rounds it was significantly worse even after cleaning.

Systema's are brass, stay away.

Guarder, no experience.

Where would you put the tanio koba's? I've been thinking about puttin on a grooved inner. On my GBB i notcied an incredible increase in acuracy

yea the twist is amazing for accuracy, but its only meant for sub 350 fps, if hes runnin anythin higher then that it wont do him any good

Through no fault of my own, the M4 shoots 396 fps. I put a prometheus hop up chamber on it and it gained 20fps, I'm eventually going to put a weaker spring in but I really don't want to take apart that mechbox until I get new screws...

i have a prometheus 6.03 in my tm m14, ive noticed such a difference from the stock barrel. the shots are extreamly consistant and accuracy is AMAZING but if i could do it over id get a 6.01 if i could do it againe :D
good luck

~Ghost~

So what's the downside to the brass systema barrel?
If I can't find a reputable 6.04 barrel I'll just buy a new 6.03 prometheus barrel.

Brass is a soft metal, prone to scratching. If you were firing steel BBs, this would be a problem. But, the polymer BBs are much softer than the barrel, so I wouldn't worry about it. Stock barrels in most guns are brass as well. They can hold up for many years and hundreds of thousands of rounds.

Stainless is harder, more brittle than brass, and is easily polished. So, it's fine for a barrel material as well.

As an aside, of all the common uncoated barrel materials brass is supposed to have the lowest coefficient of friction.

I'm getting good results with the Deep Fire stainless 6.04mm barrel I installed in my MP5A5, and for about half the cost of a Prometheus.............

None. The 7 year old Systema brass in my AK still shoots like new after I run a patch of Brasso through it and then clean it up with a quick rinse with hot water and a patch with Silli oil on it.

+1 on deepfire

I installed a 6.04 in my BA, and I noticed a great difference over the stock 6.08 brass barrel.

I think that under 6.03 you start to get random scater shots. I don't know by myself, but it seems to be a general opinion.

Ya that's pretty well what I figured, thanks :)
I'm really curious to try out the guarder barrel, but I think I'll go with good old fashioned brass systema.

http://cgi.ebay.com/Guarder-Airsoft-...QQcmdZViewItem
they say brass constructed, wouldn't be surprised if it was coated, but then again whens the last time ehobby made an accurate description? of anything?

Good point. A client of mine wh oI've had a hell of a time with his AEGs and his love of aftermarket parts (Systema and Guarder) is now sworn off those brands due to serious fuck ups and inconsistancies (more his lack of knowledge than anything else). But parts he'd send to to OK, didn't even say overbore or standard, and that was a big problem we dealt with regarding piston heads, cylinders, etc.

"Is this one ok?"

"Well, dunno, last time you bought from them it was overbore"

"How do you tell?"

"Umm, compare side by side is the only way. Cant' tell by pictures and the description is the same for all their parts"

"Shit"

omg love it, i get that a lot too when my friends come to me for upgrading help.

we should write a book :D