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Okay, so i just got in my AP4, and want to get a drop-in carbine length quad rail for her. Don't need one that's super expensive, just something for the time being until i sell off some junk and can replace the gas block and get a longer rail. I tried one from Double Star and the outside diameter was too big and wouldn't fit (it was for an ar15 so i figured it would have dropped right in). Anyone know what carbine length rail will fit this beast?

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  • 2 months later...

Midwest Industries makes drop in HG's specifically for DPMS LR .308 line, if you don't mind paying $140. They make 2 models, one for the oracle and one for the sportical. One or both of which I assume will work with the ap4. Make sure you get the right length i.e. carbine, midlength, rifle.  

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  • 3 weeks later...

The G2 actually doesn't accept all Ar15 hand guards. That was a bit of mistaken marketing by DPMS. 

Which was kind-of a bummer.

Well, that might be true for the AP4, but any AR-15 free float rail designed to fit over a low profile gas block will fit over DPMS Gen2's with free float barrel nuts and low profile gas blocks.  I installed a very slim Nordic Components AR-15 free float tube in place of the OEM quad rail.  You might consider cutting off your front sight posts, ordering a Gen2 FF barrel nut off the DPMS website, and then buying any AR15 rail you desire.



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