4 Each fifty Caliber Browning's for your M16 Half Track, or your M45 Towed Quad Fifty setup....Okedoke....These guns are made in pairs BY HAND as our Fifty Cal Jigs are set up for the standard right hand charge, left hand feed versions.  The Quad fifty guns are right hand feed, right hand charge for the right side, and left hand feed/charge for the left side....Essentially, they feed and charge from the out side.  We left the spade grips on the gun, in case you wanted to use them in the future for a different vehicle, but you can easily remove them, or we can do it here upon request.  This is the only place on the planet where you can get replicas of these Custom M2 Browning's.......Note: They DID try M3 Browning's in the quad, but, as you would imagine, firing at cyclic rate of 1100 RPM, the guns went through the tombstones pretty quick....So...They stuck with the M2.