I have a PS90 and I know how much the ammo costs. But considering the AR ammo comes in boxes of 20. It isn't TOO bad of a price for 50 rounds of rifle ammo.
But for a pistol. That kills the pocketbook.
How many rounds do U put thru your 5.7 pistols on a tripp to the range? How many rounds have U fired thru it so far?
In 6 months, I put 1500 rounds thru 1 of my P99s. I can't imagine doing that w/ 5.7...

