We sent the guys over at The Firearm Blog our two best sellers: The XPB in DLC and the XPB in Nib-X. They put them through quite the test and here is what they had to say:

Patented asymmetric bolt lugs are designed to cut through heavy fouling, and the XPB’s parts are all made from S7 tool steel. In order to see how tough the XPB really was, I dreamed up a steel-cased torture test

Sharps promised durability and reliability with the XPB, and I have to say the bolt delivers in both areas.  Even with heavy fouling, the bolt never failed, and the ejection pattern remained very consistent under prolonged full-auto fire.

Read the full review on The Firearm Blog.