Luth AR Trigger Kit Fits AR 15 Includes Trigger Hammer and Disconnector Titanium Nitride Finish Gold LRPK THD TiN LUTHLRPK THD TIN UPC 812058032427
Product Description
The Luth-AR® AR-15 Titanium Nitride (TiN) 3-Piece Trigger Kit (SKU: LRPK-THD-TiN / UPC: 812058032427) elevates standard USGI Mil-Spec fire control geometry with an ultra-slick, space-age Physical Vapor Deposition (PVD) gold ceramic coating. Engineered for custom AR-15 builders and armorers who already have preferred reduced-power spring sets or anti-walk trigger pins on the bench, this 3-piece kit includes the TiN-coated Trigger, Hammer, and Disconnector without redundant springs or pins.
Precision-machined in the USA from heat-treated ordnance alloy steel with zero Metal Injection Molding (MIM), each component is vapor-deposited with an authentic gold Titanium Nitride finish. Boasting an extreme surface hardness rating of approximately 2,400 Vickers and an exceptionally low coefficient of friction, the TiN finish eliminates the gritty creep and stacking typical of standard phosphate Mil-Spec triggers. Carbon fouling, unburned propellant, and copper residue wipe effortlessly off the non-porous gold surface with a dry cloth—even after high-volume suppressed firing sessions.
Reamed for standard 0.154-inch small-pin AR-15 lower receivers, the Luth-AR LRPK-THD-TiN assembly delivers Mil-Spec ignition reliability with a noticeably smoother, glass-like sear break and positive tactile reset. Whether adding a striking gold accent to a custom build or upgrading a duty rifle with self-lubricating sear surfaces, Luth-AR combines battle-proven geometry with elite metallurgy.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Fits all Mil-Spec AR-15, M4, M16, and compatible .308 lower receivers utilizing standard 0.154" fire control pins. CRITICAL ARMORER NOTE: This SKU includes the 3 Titanium Nitride coated steel components ONLY (Trigger, Hammer, and Disconnector). It does NOT include the trigger spring, hammer spring, disconnector spring, or 0.154" trigger/hammer pins. Pair with standard USGI springs for duty ignition or JP Enterprises 3.5–4.5 lb springs for an ultra-crisp sporting pull. NOT compatible with legacy Colt large-pin (0.170") lowers.
- Ensure the host firearm is completely clear, magazine removed, and chamber visually and physically verified empty before separating the upper and lower receivers.
- Insert your user-supplied disconnector spring (wider flared coil base oriented downward) into the top rear slot of the TiN trigger bow and stage the TiN disconnector inside the trigger channel.
- Apply a micro-drop of synthetic gun oil to the pin bores, lower the trigger and disconnector sub-assembly into the receiver fire control pocket, and secure it with a 0.154" trigger pin.
- Position your user-supplied hammer spring onto the TiN hammer with the spring legs resting rearward atop the trigger pin annular grooves, align the hammer bore in the receiver, and press the 0.154" hammer pin flush until captured by the internal hammer J-spring.
- Perform a complete 3-stage dry-fire safety and function check (SAFE selector block, FIRE primary sear release, held-trigger disconnector engagement, and positive sear reset) prior to live-fire staging.
Key Features
- Gold Titanium Nitride (TiN) PVD Coating: Ultra-hard, low-friction ceramic surface treatment smooths out sear take-up, prevents galling, and wipes clean of carbon fouling in seconds.
- Zero-MIM Heat-Treated Ordnance Steel: Investment-cast and CNC-machined to USGI Mil-Spec blueprints for uncompromising sear durability and drop-safe geometry.
- Builder-Ready 3-Piece Sub-Assembly: Includes the TiN Gold Trigger, Hammer, and Disconnector—allowing builders to pair their exact choice of custom springs and anti-rotation pins.
- Standard 0.154" Mil-Spec Pin Bores: Drop-in fitment across all standard forged and billet AR-15 / M4 lower receivers.
- 100% Made in the USA: Manufactured by Luth-AR in Buffalo, Minnesota to rigorous armorer quality control tolerances.
Product Specifications
- Brand: Luth-AR®
- Model/Series: AR-15 3-Piece Titanium Nitride Trigger Kit
- MPN / SKU: LRPK-THD-TiN / LRPKTHDTIN
- Distributor SKU: LUTHLRPK-THD-TIN
- UPC: 812058032427
- Platform Compatibility: AR-15 / M4 / M16 (0.154" Mil-Spec Pin Receivers)
- Material: Heat-Treated Ordnance Alloy Steel (Zero MIM)
- Finish / Color: Titanium Nitride (TiN) Metallic Gold
- Included Components: AR Trigger, AR Hammer, AR Disconnector (Springs & Pins Not Included)
- Country of Origin: USA
