The Atrius Development 3-Position Forced Reset Selector (brand part no. ADG-FRS-S-MS) is a drop-in safety selector built for mil-spec AR-15 lower receivers. Atrius Development Group machines the selector in a single-side configuration, giving shooters a precise, positive 3-position feel that matches standard mil-spec lower geometry. Among AR triggers, this selector favors builders who want a mil-spec-fit upgrade over a stock safety selector.

Key Specifications

• Offers 3-position selector operation.
• Built in a single-side configuration.
• Sized to fit mil-spec AR-15 lower receivers.

Frequently Asked Questions

Will this fit a mil-spec lower? Yes, it’s built specifically for mil-spec AR-15 lower receiver dimensions.

Is this a single-side or ambidextrous selector? Single-side.

Buy the Atrius Development 3-Position Forced Reset Selector

Upgrade your mil-spec lower with a precise, positive 3-position selector from Atrius Development. Order it from our Lubbock, Texas gun shop for fast shipping.