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SBranson23 · December 10th, 2007, 22:31

PDI responded. I think they basically they say the undersizing is on purpose so the fit will be tight. Then essentially blames the tolerances of the aluminum pieces for the mismatch. Lame excuse as far as I can tell as I've worked on about 5 PTW barrels, both older gen3 and newer max ones and they've all fit together very well and don't need any undersizing to assure a tight fit. They told me to file the piece down. Lame.

"Dear Sir.

Sorry for late reply.I'm Sales Manager of PDI
We answer your question instead of X-FIRE because X-Fire is a just
retailer.
We set that a depth & width become a bit smaller than Standard.

--------------------------------------------------------------------------

If that slot is a little larger as same as standard,it seems to be
difficult to fix the 3 parts(chamber ,Brass one & barrel) completely.
That block made from Aluminum by mold.It has larger tolerance than all
machined.Now we know that width is 3.5mm around.But if that is made
with negative tolerance,like a under 3.5mm,a barrel slot is too large &
can't fix completely.
So We think this block need to be larger compared to slot.
Please rasp the block a bit.

These days upgrades are very loose fit as anyone can use it,but PTW is
a very expensive rifle.That customer doesn't want that easy kit.We
guess every pro player want more serious setting.So we made that to be
tight fitting.

But you know,this is not perfect answer cause the other parts are not
precise like a die-cast, or mold.So we found the final answer to make
PDI original chamber & sleeve(brass) laser-welded to inner barrel.

Thanks

PDI Co.,Ltd.
Sales Manager"

December 10th, 2007, 22:31	#5
SBranson23 Trader rating Join Date: Jun 2006 Location: Victoria,B.C.	PDI responded. I think they basically they say the undersizing is on purpose so the fit will be tight. Then essentially blames the tolerances of the aluminum pieces for the mismatch. Lame excuse as far as I can tell as I've worked on about 5 PTW barrels, both older gen3 and newer max ones and they've all fit together very well and don't need any undersizing to assure a tight fit. They told me to file the piece down. Lame. "Dear Sir. Sorry for late reply.I'm Sales Manager of PDI We answer your question instead of X-FIRE because X-Fire is a just retailer. We set that a depth & width become a bit smaller than Standard. -------------------------------------------------------------------------- If that slot is a little larger as same as standard,it seems to be difficult to fix the 3 parts(chamber ,Brass one & barrel) completely. That block made from Aluminum by mold.It has larger tolerance than all machined.Now we know that width is 3.5mm around.But if that is made with negative tolerance,like a under 3.5mm,a barrel slot is too large & can't fix completely. So We think this block need to be larger compared to slot. Please rasp the block a bit. These days upgrades are very loose fit as anyone can use it,but PTW is a very expensive rifle.That customer doesn't want that easy kit.We guess every pro player want more serious setting.So we made that to be tight fitting. But you know,this is not perfect answer cause the other parts are not precise like a die-cast, or mold.So we found the final answer to make PDI original chamber & sleeve(brass) laser-welded to inner barrel. Thanks PDI Co.,Ltd. Sales Manager"