The KCR 556 is a service rifle which was developed for the Turkish Armed Forces by Kale Kalıp.

The modular gun is an advanced gas-operated rifle with rotating bolt head and piston op-rod driven fixed gas system.

It has a maintenance free gas system up to 10,000 rounds which minimises fouling and heat.

The chrome plated cold hammer forged barrel is free floating.

The gun is quite ergonomic with its modular flip-up iron sight and five-position telescopic adjustable stock.