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DPMS GEN2 Free Float Tube

Most don't have the equipment, but mill off the rails to the slots, machine in M-Lok slots and refinish. Keep the rails (top, front) that you want.
 
I’m not sure which one you are looking at, but make sure it is vented. The old style DPMS were solid, and the heat would come off the barrel and run out the front of the hand guard and the mirage is terrible.