The Maxim Defense Heavy JP Silent Captured Spring System is manufactured exclusively for Maxim Defense Industries to work with Maxim Defense CQB series products, and comes in a heavy weight configuration. Built from Tungsten and Stainless Steel components for durability, this premium upgrade is engineered to deliver ultra-smooth cycling and eliminate the gritty noise typical of standard buffer components, incorporating patented Silent Captured Spring technology that offers a refined shooting experience through reduced friction, minimal vibration, and unmatched quietness.
The heavy version adds mass to create a “deadblow” effect, improving reliability in demanding setups and is ideal for short-barreled rifles, suppressed builds, or any rifle requiring a heavy buffer. The system requires an open channel in your bolt carrier group assembly for the guide rod to pass during fire, and compatible modified BCGs can be acquired from JP Enterprises. The spring is removable from the assembly for custom tuning, making this an excellent choice for shooters seeking reduced recoil and quieter operation in close-quarters configurations.
