PMM SCAR Upper Receiver Bolts
It's always good to have extra hardware and PMM hardware is no exception!
If you need or want extra M4 Upper receiver bolts here they are.
8x M4x8mm Sreciver bolts
Please not if you use these bolts on the receiver guide rails they are to long and the BCG will crash into them during normal rifle function. DO NOT USE THEM IN THAT LOCATION.