SIG SG 551

The Ruger AC-556 is a select-fire assault rifle manufactured by Sturm, Ruger & Company in the United States. It is a military variant of the Ruger Mini-14 chambered in 5.56x45mm NATO. The AC-556 features a selector switch with three settings: semi-automatic, three-round burst, and fully automatic fire. It was produced primarily for military and law enforcement sale with a 13-inch barrel on the AC-556F model. The rifle uses the same gas-operated rotating bolt action as the Mini-14.

The MKE MPT-55 is a modern selective-fire assault rifle designed and manufactured by MKE (Makina ve Kimya Endüstrisi) of Turkey. Intended primarily for military and law enforcement use, the MPT-55 aims to provide a reliable and effective platform chambered in 5.56x45mm NATO. A key distinguishing feature is its emphasis on modularity and adaptability, allowing for easy configuration to suit various operational requirements. It is designed to be a robust and durable weapon, capable of withstanding harsh environmental conditions. The MPT-55 has garnered attention for its potential as a replacement for older rifles in the Turkish Armed Forces and other militaries. Its design incorporates features found in other modern assault rifles, such as a free-floating barrel and adjustable stock, while maintaining a focus on ease of maintenance and operation.

The Mini-14 is a compact semi-automatic rifle with a Garand-style action, widely used by law enforcement and civilians.