PDI PTW barrel

[SBranson23]

I bought it straight from PDI
http://www.x-fire.org/e.index.htm

[leblanc74]

Originally Posted by SBranson23

I bought it straight from PDI
http://www.x-fire.org/e.index.htm

tx branson...

[Griffin]

Dam I think PDI has sold out of its PTW barrels .

[SBranson23]

Guess I got lucky. I ordered mine the day they were released. I'm sure they'll show up at other retailers though.

[Kimbo]

Let us know how it turns out this weekend. I'd be interested in getting another setup for mine as well.

[jameskersten]

I am really interested to hear how these turn out. Keep us posted.

[SBranson23]

Originally Posted by SBranson23

Any one else get one or try to fit one on the hop-up yet.
Got my barrel the other day and PDI used the wrong sized cutter for the slot that takes the pin that holds the hop-up assembly on the barrel.
I managed to file it down to get it to fit but man this is one serious F*%K up!

I've written them and they said they haven't heard of that problem but would get back to me after looking in to it.

There's a discussion here too:
http://www.systema-europe.com/Forum/...s.asp?TID=1622

Well, as mentioned in my other thread about this barrel, there are some problems. I did file the little piece down and got the barrel to fit. I used it today and it's a tough call on the effectiveness. I did feel like my groupings were tighter but as I had just put the barrel assembly together, I was having a bit of a tough time getting real results as the hop-up was a but finicky today. I think the cold weather played a factor. Once set though, as I said my impressions were of more consistency than I'm used to but not tremendously. Honestly I wouldn't bother getting one for the M4 size and only did this to get a full length barrel. Granted also I run with the old VN set-up so it's iron sights not reddots and such which I remember make it a little easier to judge accuracy.
I'll be interested to see more rigid testing.

AND considering the fact the damn thing didn't fit properly, I would definitely wait to consider one. I will keep this post updated after I hear back from PDI.
There is some speculation that the Out of Stock status may be a result of their machining error but that is just speculation.

[mcguyver]

Are you comparing this to the Systema 6.04, or the older 6.10? Personally, I se no technical reason that the PDI 6.04 would outperform the Systema 6.04. Polishing of the I.D. is the only thing that pops into my mind.

[SBranson23]

Compared to the Systema 6.04.(haven't had the old 6.10 for some time now, if in fact I ever did. I may have gotten my gen3 sck after the switch. I never did measure it)
I know Systema says they went with the M4 length in the M16 barrel because there was no real difference in performance between them or the CQB even. This is unusual but perhaps it is so. Maybe they had other reasons though. I wanted to have a full length inner for the
M16 outer but couldn't bring myself to pay the $300 for one of Doff's.
Performance benefits could be like you said or better tolerances. I don't off hand know what Systema's machining tolerances are for their barrels.

[mcguyver]

My self personally, when it comes time to change the inner barrel in the old Gen 1, 6.04 is nice, but I would like it to even be tighter, 6.03 or 6.01. It will be a semi-only lower with the M150, and the best BB's I can find, irregardless of cost.

I've found virtually no performance difference between the M4 and CQB-R. In fact, the CQB-R is probably a bit more accurate as I have spent more time on it last spring setting it up than I did with the M4 and have used pretty much exclusively since then.

[leblanc74]

the CQB-R is probably a bit more accurate

....interesting...are those both assembled different PTW's or just 2 different uppers on one lower?

[mcguyver]

Originally Posted by leblanc74

....interesting...are those both assembled different PTW's or just 2 different uppers on one lower?

Both factory assembled guns. I have 2 MAX guns and an old Gen 1. No extra uppers.

[SBranson23]

Originally Posted by mcguyver

My self personally, when it comes time to change the inner barrel in the old Gen 1, 6.04 is nice, but I would like it to even be tighter, 6.03 or 6.01. It will be a semi-only lower with the M150, and the best BB's I can find, irregardless of cost.

I've found virtually no performance difference between the M4 and CQB-R. In fact, the CQB-R is probably a bit more accurate as I have spent more time on it last spring setting it up than I did with the M4 and have used pretty much exclusively since then.

I hear you on that and if the only option for those barrels wasn't over $300 I would likely have done it. Like I said, there were a few things that led me to get the PDI. I didn't like the idea of an M4 length in the M16 barrel. Something about the extra length of tube without the inner struck me as potentially affecting the bb, particularly on full auto with all that air swirling around in there. Also it allowed me to use he M4 inner that came with the M16 outer for a CQB upper. I bored out my old aluminum outer and cut it down, rethreaded the end and cut down the now extra inner barrel and presto, a cqb length barrel.

Also like I said, the performance differences I believe were beneficial but not enough to buy the barrel except in addition to these other reasons.
Definitely not considering the mess PDI did with the machining of mine (at least)

I'll have to check if there's an FPS boost to the longer barrel too.

[Kimbo]

Ive read that the tolerences on the PDI barrel are .002 while the systema one is .02.

Not sure how much of a difference that will really make. It'll be interesting to see if they fix their manufacturing whups.

Someone needs to pump out an aftermarket hop up as well.

[6ft4]

oh shxt, i just ordered one for my ptw, i hope it will fit fine...