Atrius Development Ambi 3 Position Forced Reset Selector Compatible w/ Milspec AR-15

These are on the way! They should be in by December 17th

The Atrius Development Group Ambidextrous Forced Reset Selector is a precision engineered three position selector designed to upgrade compatible mil spec AR-15 platforms for sale. This component enhances selector control with clearly defined SAFE, SEMI, and FULL-SEMI positions built around forced reset functionality. Built for durability and tuned for compatibility with standard 5.56, .223, and .300 BLK fire control groups, it provides an advanced control option for builders seeking improved mechanical response.

Atrius Development Group Ambidextrous Forced Reset Selector Specifications

• Manufacturer: Atrius Development Group
• Model: Ambidextrous Forced Reset Selector
• Product Type: 3 Position Forced Reset Selector
• Compatibility: Mil spec AR-15 fire control groups for .223, 5.56, .300 BLK
• Material: Heat Treated 4140 Steel
• Finish: Corrosion Resistant Coating
• Selector Positions: SAFE, SEMI, FULL-SEMI
• Installation: Drop In for Compatible Mil Spec Lowers (Some Lowers May Require Fitting)
• Requirements for Reliable Function: Mil Spec Trigger Without Rear Relief Cut; FA Pocket or Low Shelf Lower; FA Bolt Carrier Group; H2 or H3 Buffer Recommended
• Selector Screw: T10, 4/40 Thread
• Special Notes: May Require Gunsmithing on Some Platforms; Not Compatible with AR-10 Platforms Without Significant Modification

NOT FOR SALE TO THESE STATES:

• California
• Colorado (Starting Aug 2026)
• Connecticut
• Delaware
• Florida
• Hawaii
• Illinois
• Maryland
• Massachusetts
• Minnesota
• Nevada
• New Jersey
• New York
• Oregon
• Rhode Island