A review of linear compensators for firearms has been published, with a focus on hands-on testing. The review appears to cover devices for various types of guns, including AR and AK models, although some outlets are reporting on more specific types, such as muzzle brakes for AR-15s or devices for 9mm pistols and .308 firearms. The scope and specifics of the review are not entirely clear, with different outlets highlighting different aspects and types of firearms.