Perfectly engineered - Griffin Armament MK1 RECCE 5.56mm 16 inch Upper

This unit is machined perfection. From the bolt carrier group, to the mil-spec fit to the lower. In fact, it fit the ZEV forged lower so perfectly, I didn't even need the tensioning screw on my build. It must be accurate to the 1/0.000001. P E R F E CT. Just read the description given by Griffen here on OP. They have engineered every facet of this upper, with military precision by military experts. Sights perfect, BCG PERFECT. FIt to lower perfect. Wide charging handle, perfect. Exceptional piece! If you can afford it, get a short complete upper too. Sight unseen, you will not be disappointed with these uppers...now it's on to suppressors. Griffin is solid, top tier gear.