The Fostech Stealth Lightning rifle in 5.56mm (brand part no. ST-RPR-GR5DH6-S21E2) is a semi-auto AR-platform rifle built around Fostech’s own lightweight Stealth lower and upper receivers, tipping the scale at roughly 4.93 pounds. Fostech pairs a Faxon Gunner-profile 16-inch barrel with a low-mass bolt carrier group and wraps it in the Fostech Mach 2 13-inch rail. The rifle includes Fostech anti-walk pins, a Fostech Sabre comfort grip, and an Echo AR II trigger, finished in OD Green with an MFT minimalist stock. It ships with one 30-round magazine and a plastic carry case. Among lightweight semi-auto carbines in the AR rifles category, the Stealth Lightning favors shooters who want the lowest possible carry weight without giving up a full-length 5.56 platform.

Key Specifications

• Chambered in 5.56x45mm/.223 Rem.
• Built on Fostech’s lightweight Stealth upper and lower receivers.
• Features a 16-inch Faxon Gunner-profile barrel.
• Runs a low-mass bolt carrier group.
• Wrapped in the Fostech Mach 2, 13-inch rail.
• Includes an Echo AR II trigger.
• Grip is the Fostech Sabre comfort grip.
• Uses Fostech anti-walk pins.
• Stock is an MFT minimalist design.
• Ships with one 30-round magazine and a plastic carry case.
• Weighs approximately 4.93 pounds.
• Finished in OD Green.

Frequently Asked Questions

How much does this rifle weigh? Approximately 4.93 pounds thanks to Fostech’s lightweight Stealth receivers.

What trigger does this rifle use? An Echo AR II trigger.

Does it include a case? Yes, a plastic carry case ships with the rifle.

Buy the Fostech Stealth Lightning 5.56mm

The lowest possible carry weight in a full-length 5.56 platform is exactly what the Stealth Lightning delivers. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.