F4-15 Precision Barrels

The F4-15 Precision Barrel (Manufactured by Black Hole Weaponry) is made from 416R stainless steel with a proprietary polygonal rifling shape consisting of a series of arcs instead of square corners, as in traditional style Enfield rifling. This arc shaped rifling has long been held in very high regard for its accuracy, increased velocity, reduced gas cutting and ease of cleaning.