The Timney 667SST Competition Trigger is a self-contained, drop-in single-stage straight trigger designed for small-pin AR-15 platforms. It ships factory-set with a 3 lb pull and is built with a lightweight aluminum housing and hardened steel internals for consistent performance. The unit installs using the rifle’s original hammer and trigger pins and requires no gunsmithing for most mil-spec AR-15 rifles. Compatibility notes in manufacturer materials indicate a few Colt ARs use the larger .176″ pins while most AR-15s use the .156″ small-pin configuration.
Key Specifications
- Model is 667SST Competition Trigger.
- Trigger pull is 3 lbs and is non-adjustable.
- Designed for small-pin (.156″ pin) AR-15 platforms.
- Construction uses a steel/aluminum housing and components.
- Hammer is wire-EDM machined from S7 tool steel.
- Other internal components are EDM cut from A2 tool steel and heat treated to Rc 56-60.
- Finish is Black/Gold.
- Installation style is drop-in self-contained and uses original hammer and trigger pins.
- Compatibility: will fit most AR-15 rifles.
Engineered for precision and repeatable performance, this trigger is suited to competition and precision-range applications where a crisp, creep-free single-stage pull is desired. Its durable materials and captive-component design make it a practical upgrade for shooters building a consistent, match-oriented AR platform.
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