FRT-MR3 (FLAT)

About this product

Glockswitchpro is a Cedar City, UT-based retailer specializing in tactical accessories and firearm components. The FRT-MR3 (Flat) is a single-stage, 3-position forced reset trigger designed specifically for the HK MR223 and HK MR556 platforms. Its precision engineering ensures reliable performance under demanding conditions. Available now for $603.75, this trigger is ready to ship today. Reviewed by Nate Sullivan , Product Manager at Glockswitchpro. 11 years sourcing and testing tactical accessories, former military. Last updated: May 2026 Product Type Forced Reset Trigger Material High-Grade Steel Manufacturing Precision CNC Machining Finish Black Oxide Hardness/Quality Mil-Spec Compatibility HK MR223, HK MR556 Installation/Usage Drop-In Design Weight 2.1 oz Dimensions 1.5" x 0.75" x 0.25" Country of Origin USA Condition New SKU FRT-MR3-FLAT Key Features Single-stage design for consistent trigger pull 3-position forced reset mechanism Includes anti-walk pins and selector drums Mil-spec hardness for durability Drop-in installation for easy setup Who It’s For Buy it if: You own an HK MR223 or HK MR556 and want a reliable forced reset trigger You prioritize precision and durability in your firearm components You prefer drop-in installations for ease of use Skip it if: You’re looking for a budget-friendly option (check out our Triggers section for alternatives) You don’t own a compatible firearm Pros & Cons ✅ Pros: Precision CNC machining ensures high quality Mil-spec hardness guarantees durability Drop-in design simplifies installation Includes anti-walk pins and selector drums Designed specifically for HK MR223 and HK MR556 ❌ Cons: Higher price point compared to basic triggers Limited compatibility with other firearm models Comparison Feature FRT-MR3 (Flat) Cheap Import Trigger Premium Brand Trigger Material High-Grade Steel Standard Steel High-Grade Steel Quality Mil-Spec Basic Mil-Spec Compatibility HK MR223, HK MR556 Multi-Model Multi-Model Shipping Same-Day 1-2 W