The TTS Armament AR-15 Mil-Spec Lower Parts Kit includes the essential components needed to complete or refresh a standard AR-15 lower receiver build. Built around mil-spec compatibility, this kit is intended for dependable function, straightforward installation, and broad compatibility with standard AR-15 lower receivers. Whether you’re starting a new build or replacing worn components, this kit provides the core parts needed to get the job done right.
Each lower parts kit undergoes 100% inspection of critical dimensions on all applicable components. Using the U.S. military technical data package for the AR-15/M16 weapon system as the standard of reference, TTS Armament checks the key specifications that matter most to fit, function, and reliability, including features such as pin diameters, hole diameters, spring lengths, and other critical dimensions. This is not a batch-sampled process — every applicable part in every kit is inspected for the critical measurements that determine proper performance.
By verifying the dimensions that matter most, TTS Armament is able to ensure the included parts are within spec where it counts and provide builders with greater confidence in the consistency and quality of the kit.
Features
- Mil-spec AR-15 lower parts kit
- Designed for standard AR-15 lower receiver compatibility
- Ideal for new builds or replacement of worn components
- 100% inspection of critical dimensions on applicable components
- Key measurements checked against U.S. military technical data
- Built for dependable function and practical use
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