[Zack The Ripper]

So far the A+ rubber is stellar in my M4. I have the still tune it a bit because even on low hop setting it is still giving my rounds slightly upwards arcing at 50+ feet as I am having to aim low at those distances.

I'm almost certain that the PDI W-Hold will have the same effectiveness as using it in my WE G17 its sending .25's on a perfect straight laser line with very little left-right deviation. It has actually increased the effective range (meaning long as well as accurate) on my Glock to a solid 75 feet. I'm sure the results will be very welcomed when coupled with the longer barrel and higher velocity of my M4 or my new SCAR.

More to follow.