Why We're Discontinuing Apex Semi Drop-In Barrels We have some important news to share today. We've decided to cease manufacturing of our Semi Drop-In barrels. Don’t worry, we'll explain why. The Beginning: When we started manufacturing our Apex Grade barrels, we decided to offer two options to our customers: Gunsmith Fit (GS): Most accurate (sub-1.5” groups at 25 yds), requires...