The Springfield Armory Hellion is a semi-automatic bullpup rifle chambered in 5.56 NATO. It has a 20-inch barrel set in a bullpup stock, keeping overall length compact while retaining full barrel velocity. The rifle ships with a 30+1 round capacity. 
 

Key Specifications 

• Brand: Springfield Armory 
• Model: Hellion 
• Caliber: 5.56 NATO 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 20 in 
• Color: Black 
   

Detailed Features 

• Bullpup stock places the action behind the trigger group 
• 20-inch barrel in a compact bullpup layout 
• Semi-automatic operation chambered in 5.56 NATO 
• 30+1 round capacity 
• Blue/Black finish

Owners of the Hellion consistently note the bullpup layout as the main draw. Getting a 20-inch barrel in a reduced overall package appeals to those who want full 5.56 NATO performance without a full-length rifle. That said, shooters coming from conventional layouts need real range time before the trigger feel and reload sequence become natural.

The 20-inch barrel earns positive marks for accuracy and velocity at distance. Handling is generally comfortable once the ergonomics click, though the balance point takes adjustment compared to a standard rifle. Ambidextrous controls get frequent praise from left-handed shooters.

Aftermarket support is a recurring topic. The Hellion does not share as deep an accessory ecosystem as more established platforms, and some owners wish for more options. Trigger reset is the most common specific complaint, but build quality is rarely questioned.