The Charging Handle ONERO is a great addition to your First Strike T15 to recock without problems on both sides. It consists of 6 parts, all individually milled from a full block of 7075 aluminum and treated like our other products with a particularly resistant surface finish. The included spring is slightly stronger and provides a better feel and tighter fit to the ONEROs. We have designed the arms to be interchangeable, from a design of ours (interchangeable arms as a product to follow in 2023) or with a 3D print. Also here we can say that everything is 100% Made in Germany and wish you a lot of fun with the product.