AR-15 Bolt Carrier Groups are among the hardest-working components in the rifle. Every time an AR-15 cycles, the BCG unlocks the bolt, extracts and ejects the fired case, resets the hammer, strips the next round from the magazine, chambers it, and locks the action back into battery. Because it handles so many critical functions, bolt […]
Category Archives: AR-15 Bolt Carrier Groups
The best BCG coating for your AR-15 depends less on the color of the carrier and more on how you shoot, how you clean, and what you want to spend. We hear the coating question from buyers every day at AR15Discounts. It usually comes right after someone notices that two carriers with the same steel […]
The AR-15 bolt handles some of the most demanding work inside the rifle. Each time the rifle fires, the bolt locks into the barrel extension, contains chamber pressure, extracts the empty case, and helps prepare the firearm for the next round. Over time, heat, friction, carbon buildup, and repeated cycling can wear down individual components. […]



