Description
Standard pivot and takedown pins on LR-308-pattern rifles can be fiddly to manipulate, particularly in the field or under time pressure. CMMG’s HD Pivot and Takedown Pin Kit for the Mk3 platform addresses that directly: the pins are machined slightly longer than the factory-spec parts, which gives your fingers enough purchase to cycle them without tools or fumbling. Each pin also has a small divot at the tip — a practical detail that lets you use a bullet nose to push the pin through without the risk of the tip skating off and marring the receiver. That combination makes takedown and reassembly noticeably more deliberate and controlled compared to working with flush-seated pins.
The Mk3 platform is CMMG’s .308 Win line, built on the LR-308 pattern rather than the mil-spec AR-15 footprint, so standard AR-15 pivot and takedown pins are not interchangeable here. This kit is the correct replacement or upgrade option for that specific lower. It ships as a parts kit, meaning it contains what you need to replace both pins. CMMG backs the kit under their Lifetime Quality Guarantee, which covers the workmanship of their parts. If you run a Mk3 lower and want to make field-stripping faster without modifying the receiver, this is a straightforward, direct-fit solution from the platform’s own manufacturer.




