The Jmac Customs MODULAR REAR KALASHNIKOV TRUNNION ADAPTER-AKMS delivers a versatile upgrade for AKMS platforms with a rugged Black finish designed to enhance fit and function across rifle receivers. Engineered for modularity, this trunnion adapter integrates seamlessly with compatible AKMS configurations, enabling reliable rear-portion mounting and streamlined assembly while maintaining solid chamber alignment and overall endurance under field conditions. Crafted by Jmac Customs to meet demanding rifle parts standards, the adapters robust construction supports consistent accuracy and dependable operation during high-volume shooting, hunting, or practical rifle use. Its modular design allows shooters to tailor their setup for specific missions or environments, simplifying maintenance and transit between configurations without sacrificing strength. The Black finish not only provides a stealthy, low-reflective appearance but also contributes to corrosion resistance and long-term durability in varied weather. For builders and enthusiasts seeking to optimize rear trunnion engagement on AKMS receivers, this component represents a clean, professional upgrade that integrates with existing parts to deliver dependable performance, straightforward installation, and lasting value.