The Kel-Tec SU-16E is a semi-automatic rifle chambered in 5.56 NATO with a 16-inch threaded barrel and green synthetic furniture. It uses factory peep-style iron sights for quick target acquisition and includes a top rail for mounting an optic. The threaded muzzle accepts common 5.56 muzzle devices. 
 

Key Specifications 

• Brand: Kel-Tec 
• Model: SU-16E 
• Caliber: 5.56 NATO 
• Action: Semi Auto 
• Capacity: 10 Rounds 
• Barrel Length: 16 inches 
• Color: Green 
   

Detailed Features 

• The 16-inch barrel is factory threaded, so a suppressor or muzzle device can be added without gunsmithing. 
• Peep-style rear sight pairs with a front post for a reliable backup sighting setup even with an optic mounted. 
• A top rail spans the receiver for mounting optics and other accessories. 
• Green synthetic furniture keeps the rifle lightweight while standing apart from typical black polymer builds. 
• Semi-automatic operation supports fast follow-up shots without manual cycling.

The SU-16E draws a loyal following among Kel-Tec owners who like that it runs a different action than a typical AR-pattern rifle. Reliability opinions vary: many owners report the rifle runs cleanly once it is broken in and lightly lubricated, while a smaller group has dealt with occasional feeding issues that usually trace back to magazines rather than the rifle itself.

Handling-wise, the green furniture and lighter weight make the SU-16E popular for truck guns and general range use, and the peep sight setup gets praised for fast target acquisition without an optic. Some shooters find the controls less intuitive than an AR-pattern manual of arms, since the SU-16E does not mirror that layout exactly.

On value, the SU-16E tends to get bought as a budget-friendly alternative to AR-pattern rifles, and owners like that the threaded barrel and top rail keep aftermarket options open. The folding-stock variants of the line are a frequent highlight, though aftermarket support is thinner than for more common platforms.