KAC QDSS NT4 PRG 5.56mm Black is a 5.56 rifle suppressor built for shooters who want reliable, repeatable performance. It uses high-strength stainless steel and other modern alloys, giving a good balance of durability, heat resistance, and manageable weight. It is rated by the manufacturer for use with 5.56 NATO and similar .223-class cartridges (always confirm specifics with the current manufacturer data). This configuration typically ships with mounting hardware as specified by the manufacturer, making it straightforward to integrate with compatible hosts. Note: In-stock reflects what is immediately available from distributors (~1 week to arrive at the shop).