With this complete setup from Catalyst Arms, you can take your Ruger PC Carbine to the next level. Not only does this give you more accessory-attachment points, it'll also help you fit the carbine's length-of-pull to your body, so you'll have a more comfortable, natural shooting experience. Plus, all these enhancements are made right here in the USA and machined from durable 6061-T6 aluminum with an anodized finish. This Catalyst Arms Hardpoint Rail Extension makes it easy to add more attachment points for on your carbine, and it doesn't require any modification to install. This extension is designed to clamp onto your carbine's forend, and it gives you three M-LO Mfg: Catalyst Arms