Gun Engineer Trigger for AR-15

Upgrade or replace your AR-15 fire control group with the Stag Arms Mil-Spec Trigger—a durable, no-nonsense component built to deliver consistent performance. This trigger is designed to fit all AR-15 platforms that accept standard mil-spec parts, making it an ideal option for builds, repairs, or replacements.

This trigger is built to meet military specifications for reliability and function. Gun Engineer is widely respected for producing high-quality components—especially their left-handed AR-15 rifles—and maintains full U.S. production standards. Whether you’re building a rifle from the ground up or refreshing an existing setup, this mil-spec trigger from Stag Arms delivers proven performance with American-made quality.

Key Features:

• Fits all AR-15 rifles with mil-spec lower receivers.
• Standard mil-spec trigger group.
• Ideal for replacements, repairs, or new builds.
• Known Stag quality and reliability.

See our complete line of AR-15 Products here

Note: Gun Engineer always recommends any part be installed by a qualified and trained gunsmith. Gun Engineer promotes the use of safety practices and gear when working on any firearm.