Last Saturday I finally had a chance to shoot the HK MP5SD build. I put 300 rounds of WWB ammo through it. The first round FTE. It was flawless after that.
My boss, Col Roy and my son Dylan shooting the M4 I built Col Roy the Friday night before. I used a Delton Kit and a stripped Surplus Arms lower. I have built proubably 20 plus of these in the last 6 years and as always Del-Ton never disapoints me.
It sings like a sewing machine of course, for $585 out the door to the range.