Gas Port Drill Bits

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These are the drill bits I use for drilling 7.62 gas ports.  These will fit into the port and it will guide the drill.  Just press the gas block on first.  This works on the Romanian and AMD65 style (45 degree)gas blocks.  The Bulgarian 74 gas port holes are smaller and need...
This drill is .076" and the original port size is .077". More than likely with a cheap drill press or hand drill the bit will cut oversize so it won't really matter. The original hole looks to be drilled with a .156" or 4mm spot drill then drilled with the smaller drill bit.  All the...
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