Made with an aluminum based alloy. The Javalin is lightweight and very strong. Our suppressors feature our patented enhanced flow through technology. (Patent # 10,753,699) The Javalin weighs as much as the other aluminum suppressors out there; but functionally it performs like steel / titanium based suppressors. We've been developing our pistol calibers for quite some time and are excited to finally be able to offer them to the public. Comes with a removable end cap in event of a strike. You'll be able to take off and swap out a new cap. No need to send your unit in and wait for repairs.