Quick Tip: BRN-4/HK-416 Barrel Swap
This YouTube video from Brownells features Caleb providing a detailed tutorial on how to swap barrels on a BRN-4 upper receiver, which is an HK416 clone. The demonstration involves replacing a 14.5-inch nitride barrel with a 13.7-inch chrome-lined barrel. Caleb explains the rationale behind this upgrade and emphasizes the advantages of chrome lining for firearms.









