*IMPORTANT NOTE: CHECK STATE REGULATIONS REGARDING FORCED RESET SYSTEMS BEFORE STAGING YOUR BUILD!*
Atrius Development Group Ambidextrous Forced Reset Selector - "G-Lever" Optimization Kit, 3-Position Super Safety, Heat-Treated 4140 Steel, Black Nitride - ADG-FRS-AMBI-G
Product Description
Upgrading your standard defense rifle to achieve rapid-fire split times can be a finicky process on the staging bench. Traditional multi-position safety selectors built for assisted mechanical resets require unyielding tolerances between the internal cam surfaces, your trigger tail, and the cycling bolt carrier group. Variations across different receiver brands can lead to carrier drag or failure-to-reset errors during intense runs. The **Atrius Development Group® Ambidextrous Forced Reset Selector W/ "G-Lever" (ADG-FRS-AMBI-G)** completely flatlines these assembly variables by including a specialized structural alignment bracket that guarantees flawless fire-control tracking.
Proudly engineered, multi-axis CNC-machined, and performance-tested in the United States, this advanced "Super Safety" system updates your manual of arms across three positive indexing zones: **SAFE, SEMI (Traditional Single-Shot), and SUPER-SEMI (Mechanically Assisted Forced Reset Mode)**. Machined from a unibody block of **military-grade, heat-treated 4140 steel alloy**, the core selector drum features an active mechanical reset cam. The defining upgrade of the **"G" model variant** is the inclusion of the proprietary **G-Lever stability yoke**. This hardened sheet-metal guide bracket wraps around the internal receiver walls underneath the fire control block. It locks the selector drum in perfect physical alignment with the trigger and bolt carrier tail, preventing horizontal walk or wobble and ensuring crisp assisted resets without binding.
Complete with an aggressive, dual-sided ambidextrous lever layout, a crisp 90-degree detent path, and an incredibly hardwear-grade black nitride protective jacket, this turnkey armorer asset represents the peak of fire-control staging reliability on your workbench.
*Armorer Bench Notes & Real-World System Tuning Guidance: The Atrius ADG-FRS-AMBI-G selector system arrives unboxed with the 4140 steel multi-cam drum, the specialized G-Lever stabilization bracket yoke, left and right tactical levers, custom T10 Torx assembly fasteners (4-40 threads), an indexing spring, and a premium detent pin. CRITICAL RECOIL & FIRE CONTROL INTERFACE MATRIX: This specialized safety selector is designed natively and strictly to interface with **standard Mil-Spec AR-15 lower receivers (.223/5.56/.300 BLK) running full-profile, Mil-Spec fire control groups**. *Trigger Geometry Constraint:* Your mil-spec trigger rear section must be completely square—this system **will not function with triggers that have a rear U-notch relief cut**. ESSENTIAL CYCLING UPGRADES FOR SUCCESSFUL STAGING: Because the system relies on physical contact during recoil, your host rifle **MUST utilize a Full-Auto (FA) profile Bolt Carrier Group** to trip the selector cam. To eliminate bolt bounce and avoid light primer strikes downrange, you must pair this assembly with a heavy **H2 or H3 tungsten-weighted buffer module** inside carbine receiver extensions (or a standard rifle buffer on 20" fixed stocks). Armorer Workbench Staging Sequence: 1. Visually and physically confirm your workspace is completely clear of live ammunition. 2. Remove the pistol grip screw to safely capture your lower receiver's factory safety spring and detent pin. 3. Strip out your hammer and trigger pins to lift the fire control group out of the frame pocket. 4. Drop the sheet-metal G-Lever yoke into the bottom of the fire control pocket first, aligning its circular side windows with the receiver's safety selector holes. 5. Slide the 4140 steel cam drum through the receiver and the bracket simultaneously. 6. Reinstall your trigger components over the top of the bracket arms. 7. Fasten the ambidextrous left and right levers onto the drum dovetails, apply a drop of blue thread locker to the T10 screws, and torque to exactly **15 inch-pounds (in-lbs)** before performing dummy-round function tests downrange.*
Key Features
- Proprietary G-Lever Stability Yoke: Includes a custom structural alignment bracket that wraps the safety drum to eliminate horizontal walk, preventing carrier drag or reset failures.
- Advanced 3-Position Selection: Delivers three distinct operational positions: SAFE, traditional SEMI-AUTO, and high-speed mechanically assisted SUPER-SEMI.
- Active Trigger Assist Cams: Leverages the rearward movement of the bolt carrier group to actively force the trigger forward into its reset position, cutting down split times.
- Premium Heat-Treated 4140 Steel: CNC-machined from ultra-hard military steel billet to stand up to heavy high-volume cyclic impact forces without deforming.
- True Ambidextrous Control: Features textured, dual-sided levers that let you manipulate and clear the safety smoothly from either shoulder or during off-hand barricade drills.
- Corrosion-Resistant Black Nitride Finish: Coated in a deep, slick black nitride treatment that sheds moisture, carbon fouling, and harsh chemical cleaning solvents.
Product Specifications
- Brand: Atrius Development Group® / ADG (Made in USA)
- Model Line: High-Performance Three-Position Mechanical Assisted Forced Reset Selectors
- MPN/SKU Code: ADG-FRS-AMBI-G (Ambidextrous G-Lever Specification Safety Variant)
- UPC Code Profile: 850079014022
- Lower Receiver Compatibility: Standard AR-15 Mil-Spec Receivers (FA Pocket / Low Shelf Requirements)
- Stabilization Hardware: Included Custom Formed Sheet-Steel Internal G-Lever Tracking Bracket
- Fire Control Group Match: Full-Profile Mil-Spec Triggers (No Rear U-Notch/Relief Cuts Allowed)
- Bolt Carrier Group Requirement: Traditional M16 / Full-Auto Profile Carrier Groups Only
- Recommended Recoil Buffer Matrix: Minimum H2 / Recommended H3 Heavy Tungsten Weight Buffers
- Selector Cam Material Core: Premium Multi-Axis CNC-Machined Heat-Treated 4140 Carbon Steel Billet
- Exterior Finish Dressing: Industrial Grade Anti-Wear Corrosion-Resistant Smooth Black Nitride Shield
- Selector Control Layout: Dual Levers (Full Ambidextrous Left/Right Hand Side Thumb Manipulation)
- Fastener Mounting Torque Spec: 15 Inch-Pounds Maximum (T10 Torx Screw, 4-40 Thread Metric Limits)
- Full Kit Component Checklist: Completed 4140 Ambi Drum, G-Lever Yoke, Left/Right Tactical Levers, Torx Screws, Spring/Detent Set
- Packaging Format Class: Branded Factory Retail Sealed Protection Pack with Tech Guidelines Insert
- Product Type Category: Rifle Components / Specialized Fire Control Upgrades & Safety Selectors
- Overall Unit Silhouette Profile: 3-Position Linear Multi-Cam Variable Indexing Core Cylinder
- Net Component Module Mass: ~0.95 Ounces (With Internal G-Lever Alignment Assembly Bracket Mass Weight)
- Jurisdictional Delivery Exclusions: Restricted for transport into CA, CT, DE, FL, HI, IL, MD, MA, MN, NJ, NV, NY, OR, RI, WA, and D.C.
- Warranty Tracking Protection: Fully Backed by Atrius Development Group Factory Product Coverage
