Upper & Lower receiver compatibility

No1Evo

No1Evo

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Hi, 

Does anyone know if the A&K M4 lower is compatible with a G&G upper?
 

Any info or help would be great.

TIA

 
They are not. I don't think any different brand upper and lower are compatible. Many times even the same brands aren't if they are not from the same manufacturing time.

 
Last edited by a moderator:
I’ve got a g&g lower knocking around somewhere I think if that’s what your looking for

 
No1Evo said:
Certainly is mate I’ve been looking for one of a raider preferably and in black, it’s to go onto an ARP9
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Well that almost definitely won't work without some fettling! Does the ARP9 use a standard V2 type box and hop unit? Otherwise it will almost certainly not line up.

 
This is the end product seems to feed fine so far. Seems to give a bit of a twang im

assuming that’s cause it’s a metal lower though? 

View attachment 62476

 
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