Phosphate, chrome, nickel boron, nickel teflon. Sound familiar? You may be a “Gun Geek” (If so, you’re in excellent company.), particularly one looking at an AR-15 bolt carrier group, or BCG. These may be the most common coatings for BCGs, but several months ago, I discovered something new. The BCG I found, and obtained, was the Leitner-Wise Manufacturing […]

