Explore the MK18 Crane Spec collection from Andro Corp Industries

Featuring precision-engineered 10.3″ AR-15 firearms, uppers and barrels built to authentic Crane specifications. Designed for optimal suppressed performance, each upper includes correctly sized gas ports to minimize blowback and ensure reliable cycling—making them ideal for shooters who demand military-grade quality and performance. Whether you’re building a true-to-spec MK18 clone or upgrading your AR-15 for superior suppressed shooting, our Crane Spec products deliver unmatched reliability, durability, and authenticity.

Curious about Crane Spec?
Read our Crane Spec blog post to learn more about the history, features, and performance benefits behind these authentic builds.