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Discussion Starter · #1 · (Edited)
Hi all, Ive recently purchased a TNW FN M2/M3HB

I've read a lot of those posts here on these and just wanted to get some clarification on things

FN boxes can be made to take USGI M2 parts?

Can the KMP semi auto trigger parts be made to work in the FN semi?

Can M2 spades work in place of the M3 large buffer, or should I just keep the M3 large buffer

07/02 FFL, can a drop in bolt be made to work in the FN box? I assume that would require replacing the rear top piece so you can time the weapon as well?

I have already replaced the barrel locking spring since it was the wrong one as others have stated, anything else anyone would recommend replacing?

Thanks for the help
 

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This should cover FN box to USGI

This should help with the M2 vs M3

Others will be along with more advice. Lots of advice in the 50cal M2hb section if you need more reading while you wait for responses.
 

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Discussion Starter · #3 ·
This should cover FN box to USGI

This should help with the M2 vs M3

Others will be along with more advice. Lots of advice in the 50cal M2hb section if you need more reading while you wait for responses.
Thank you very much!
 

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Yes, US M2 internals will work on FN box with KMP semi auto setup.
US M2 Spade grips will NOT Work on FN without major modifications.
I Also swapped out FN top plate bracket for US Style.
Personally I would switch out FN junk internals because of no parts available on the market.
Post some pictures of witch model gun you have FN made few different models
 

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Yes, US M2 internals will work on FN box with KMP semi auto setup.
US M2 Spade grips will NOT Work on FN without major modifications.
I Also swapped out FN top plate bracket for US Style.
Personally I would switch out FN junk internals because of no parts available on the market.
Post some pictures of witch model gun you have FN made few different models
They won't without modification.
Unless you have the unicorn 3rd model FN.'
TNW never had any of those kit's.
 

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Pictures would be great! What are the key differences between models? I'm not sure the link I referenced covered that. I'll have to reread. I just thought it was relevant to OP questions. So much to learn. Glad to found this place.
 

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I'm pretty sure that we put the buffer tab slot in those plates.
I could be wrong I made them 3 years ago.

BTW we are making the FN style Front sites. should have a few extras when we are done.
 

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I'm pretty sure that we put the buffer tab slot in those plates.
I could be wrong I made them 3 years ago.

BTW we are making the FN style Front sites. should have a few extras when we are done.
Yes, you milled slot for US buffer into RSP. I Totally forgot about that step.
Put me down for front sight. I'll shoot you text when I'm back from working vacation.
 
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