The SU-16E is currently available in two models D9 and D12. The SU-16E12 has a longer barrel for higher velocity and can also accept a standard M-9 bayonet or more appropriately Kel-Tec's light weight folding bayonet. The SU-16E is a gas operated semi-automatic rifle in 5.56 mm NATO caliber. The barrel and chamber are chrome lined. All steel components are Parkerized. The "Delta" model rifles are intended as a personal weapon for non-infantry military personnel special operations SWAT law enforcement and civilians in high risk environments. The SU-16E is especially suited for low intensity urban combat such as ambush response from inside a vehicle or fighting in confined spaces. The concept of replacing the pistol with a carbine in military units is not new. The intermediate power 5.56 mm round and modern polymer materials make it possible to achieve a weapon of a size and weight only marginally larger than a Sub Machine Gun. The SU-16E is less than 20" folded weighs 4.7 lbs loaded with 30 rounds and has a practical range of over 150m.