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11/22/2017 10:05:29 PM
Posted: 10/16/2004 6:54:55 PM EST
Could someone enlighten me as to the various part differences between the PolyTech and the GI guns?

Primary interest is differences in Bolt, Flash Hider, Stock.

Thanks!!
Link Posted: 10/16/2004 6:57:49 PM EST

Originally Posted By MickeyMouse:
Could someone enlighten me as to the various part differences between the PolyTech and the GI guns?

Primary interest is differences in Bolt, Flash Hider, Stock.

Thanks!!




With the Poly Tech you will have to send it to Fulton Armory and have them completely redo it including replacing the soft metal bolt.


With the GI gun you load the mags and shoot.

SGtar15
Link Posted: 10/16/2004 6:59:04 PM EST
Nope. Want to know the differences on parts dimensions.
Link Posted: 10/16/2004 6:59:33 PM EST

Originally Posted By MickeyMouse:
Nope. Want to know the differences on parts dimensions.




Oh...nevermind
Link Posted: 10/16/2004 7:02:09 PM EST
IIRC, You cannot replace the barrel with a GI barrel.


This may/may not mean much to you unless you are a serious shooter.

Barrels DO wear out. Ask about this on the comperitive forum.
Link Posted: 10/16/2004 7:04:09 PM EST
I am aware of the bolt issue. Fulton is ONE solution. There is also another company, Smith, IIRC that does the GI bolt thing a little differently. My understanding is they machine somewhere on the receiver to allow a GI bolt to fit. THAT is one detail I need. Also want to trash the post ban "non functional" flash hider with neutered bayo lug. MUST I use Chinese one or can I modify a GI part to work?

Same on stock - can GI part be made to work or not?

Thanks!!
Link Posted: 10/16/2004 7:06:30 PM EST
MickeyMouse: Man those are pretty specific questions, maybe you can email Smith Ent. and ask them and get it straight from the horse's mouth. If you find out please post your findings.
Link Posted: 10/16/2004 7:10:33 PM EST

Originally Posted By MickeyMouse:
I am aware of the bolt issue. Fulton is ONE solution. There is also another company, Smith, IIRC that does the GI bolt thing a little differently. My understanding is they machine somewhere on the receiver to allow a GI bolt to fit. THAT is one detail I need. Also want to trash the post ban "non functional" flash hider with neutered bayo lug. MUST I use Chinese one or can I modify a GI part to work?

Same on stock - can GI part be made to work or not?

Thanks!!



You can put a USGI or Fulton repro flash supressor on a PolyTech - no modifications needed, but then you might run into some 922(r) violations unless you get enough U.S. partsi n the thing.

I wouldn't be so quick to discount the PolyTech bolt. Mine ran fine and as far as I know, is still running fine for the new owner I sold it to.
Link Posted: 10/16/2004 7:20:39 PM EST
[Last Edit: 10/16/2004 7:24:37 PM EST by tangeant]
A GI barrel may or may not fit depending on how it indexes.

Parts differences:

gas cyl and plug threads are metric.
Gas cyl lock threads are metric.
Flash hider castle nut threads are metric but a GI one will thread on.
Windage Knob / Sight base threads are metric but GI will work.
Op-rod guide has a solid pin.
uses metric size roll pins.
Poly/Norincos fit in GI stocks vice versa, Chinese stocks are fat kinda suck and use soft wood.
parts in general are pretty good except for soft bolts.

I have a Norinco I re-did with GI parts " Bolt,stock, Commercial bbl etc."
Link Posted: 10/16/2004 7:21:50 PM EST
Link Posted: 10/17/2004 2:40:13 AM EST
tangeant - THANK YOU!! That is JUST what I wanted to know. Leaves only the bolt issue unclear - what does Fulton modify on the bolt or Smith on the receiver??

What are the "legal" parts as defined by ATF??

Barrel
Bolt
Receiver
Op-Rod
Gas piston
Hammer
Trigger
Sear
Mag Body
Follower
Base plate
Muzzle device
Stock
Handguard???

If above is accurate, USI stock, hand guard, bolt and flash hider would bring us to 10 imported parts and there would be zero issues?

Link Posted: 10/18/2004 10:10:22 PM EST
The mag can count to.
Link Posted: 10/18/2004 10:14:04 PM EST
They are better than any new SA M1a!

They are great forged recivers,just need a good bolt to go!!!

Bob
Link Posted: 10/18/2004 10:19:26 PM EST
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