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XTech Tactical Lower Parts Kit AR15 M4 With Heavy Texture ATG Pistol Grip Black XTT138LPK UPC 856822007846
Product Description
The XTech Tactical® Complete AR-15 Lower Parts Kit (SKU: XTT138LPK / UPC: 856822007846) delivers a comprehensive 30-piece hardware suite engineered to convert any stripped AR-15/M4 lower receiver into a fully functional, mission-ready fire control foundation. Centered around precision semi-automatic fire controls and upgraded operator contact points, this complete assembly package eliminates the need to source individual lower components while providing enhanced control surfaces right out of the packaging.
Every internal mechanical component in the XTT138LPK kit is manufactured from heat-treated carbon steel with corrosion-resistant anti-friction surface treatments to ensure repeatable lockup, crisp sear engagement, and consistent disconnector reset. All high-stress springs are wound from high-tensile spring steel to guarantee long cycle life and prevent light primer strikes or sluggish bolt hold-opens. The included high-strength impact-modified polymer furniture components provide maximum chemical, UV, and solvent resistance against aggressive bore cleaners and adverse environmental exposure.
Setting this kit apart from standard Mil-Spec kits is the inclusion of the XTech Tactical Heavy Texture ATG (Adjustable Tactical Grip) and an enlarged polymer winter trigger guard. The ATG platform provides enhanced wet/dry weapon retention with aggressive non-slip texturing, while the bowed trigger guard gives the shooter ample trigger pocket clearance when operating with heavy combat or cold-weather tactical gloves.
*Armorer Bench Notes & Real-World Staging Guidance:*
Fitment Matrix: Engineered for standard semi-automatic Mil-Spec AR-15, M4, and pistol-caliber carbine lower receivers using 0.154" diameter trigger/hammer pin holes. CRITICAL: Front pivot pin, rear takedown pin, and bolt catch dimensions are specific to standard AR-15 receivers and are NOT compatible with AR-10, LR-308, or SR-25 platform dimensions. Use designated brass punches or roll pin punches with non-marring tape during bolt catch roll pin installation to avoid marring the lower receiver finish. Do NOT overtighten the pistol grip screw beyond 25–30 in-lbs into aluminum receiver threads.
- Ensure the host firearm is completely clear, magazine removed, and chamber visually and physically verified empty.
- Install the magazine catch assembly and bolt catch mechanism into the stripped lower receiver using a dedicated roll pin punch, taking care to support the lower receiver ears with an armorer block.
- Assemble the front pivot pin with detent and spring (using a pivot pin install tool or razor blade method), followed by the trigger, disconnector, trigger spring, and 0.154" trigger pin.
- Install the semi-auto hammer, hammer spring, and hammer pin, followed by the safety selector lever, selector detent, detent spring, and secure the ATG pistol grip using the included grip screw.
- Install the rear takedown pin, detent, and spring, install the buffer retainer and spring during receiver extension staging, and perform full dry-fire functional checks (safe, semi, hammer drop, trigger reset) prior to live-fire staging.
Key Features
- Complete 30-Piece Solution: Includes every semi-automatic internal spring, pin, detent, trigger, hammer, disconnector, and latch required to complete a stripped receiver build.
- Heavy Texture ATG Pistol Grip: Delivers superior non-slip tactile traction and proprietary ergonomic design for optimized wrist angles and rapid weapon transitions.
- Enhanced Polymer Trigger Guard: Bowed profile expands the trigger area, preventing knuckle pinch and facilitating effortless operation when running heavy gloved hands.
- Mil-Spec 0.154" Pin Dimensions: Precision-ground engagement surfaces ensure direct drop-in compatibility with standard AR-15 fire control pockets and stripped lowers.
- Durable Surface Treatments: Black oxide and corrosion-resistant finishes across all steel springs, pins, and controls withstand harsh operational conditions.
Product Specifications
- Brand: XTech Tactical®
- Model/Series: Complete AR-15 Lower Parts Kit with ATG Grip
- MPN / SKU: XTT138LPK / 169956
- UPC: 856822007846
- Platform Compatibility: AR-15 / M4 Semi-Automatic Lower Receivers
- Country of Origin: United States
