Strike Industries AR-15 Enhanced Lower Receiver Parts Kit (Less Trigger/Grip) - SI-AR-E-LRPLT - UPC 708747544961
Product Description
The Strike Industries AR-15 Enhanced Lower Receiver Parts Kit (SI-AR-E-LRPLT) is a premium, duty-grade upgrade package designed for shooters building a high-performance custom AR-15 lower receiver or overhauling an existing mil-spec setup. This kit includes all the critical enhanced small parts, detents, and springs required to complete a lower build—intentionally excluding the pistol grip and fire control group (trigger/hammer) to allow builders complete freedom in selecting their preferred aftermarket ergonomics and match trigger systems.
Every component in the SI-AR-E-LRPLT is engineered to improve ergonomics, speed up manipulation, and withstand aggressive field use. The package features Strike Industries' flagship enhanced components: the Shift 2-in-1 Extended Takedown and Pivot Pins for quick tool-less teardown, the Hex Selector Switch (customizable for standard 90-degree or short-throw 60-degree throw), the Extended Bolt Catch for rapid lockback and release, and the Ultra Light Enhanced Magazine Catch Button for positive magazine changes.
Precision-machined from high-strength steel and lightweight alloys with severe-duty black oxide and anodized coatings, the SI Enhanced LPK elevates your lower receiver's functional mechanics over standard GI parts. Complete with anti-rotation hammer/trigger pins, detents, springs, and an enhanced pin punch helper, this kit ensures a smooth, professional installation and reliable operation under extreme conditions.
*Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Direct fit for all standard Mil-Spec AR-15 and M4 lower receivers. Note: Does NOT include a pistol grip, pistol grip screw/washer, fire control group (trigger, hammer, disconnector), or trigger springs. Designed specifically for custom builds using specialized aftermarket triggers and grips.
- Verify host lower receiver is clean, clear, safe, and completely bare before starting assembly.
- Install the Strike Shift pivot pin and takedown pin using the included detents and springs; take care not to launch front pivot detents under spring tension during driver insertion.
- Assemble the Hex Selector Switch according to your preference (60° short throw or 90° standard configuration), applying a drop of blue threadlocker to selector screw fasteners before final torque.
Key Features
- Modular Builder Configuration: Includes all enhanced lower receiver small parts while leaving grip and trigger selection open for custom shooter preference.
- SI Shift 2-in-1 Pivot & Takedown Pins: Features extended head geometry and integrated detent grooves for tool-less pin manipulation and fast receiver separation.
- Hex Ambidextrous Selector Switch: Fully customizable for traditional 90-degree throw or fast, ergonomic 60-degree short-throw activation.
- Extended Bolt Catch: Oversized upper and lower paddle surfaces provide aggressive tactile purchase for bolt locks and releases.
- Enhanced Magazine Catch & Ultra Light Button: Scalloped aluminum button face improves tactile feedback and ensures swift, positive mag ejection.
- Complete Detent & Spring Set: Includes stainless/music-wire springs, steel detents, buffer retainer assembly, and anti-rotation pin hardware.
Product Specifications
- Brand: Strike Industries
- Model: AR-15 Enhanced Lower Receiver Parts Kit (Less Trigger & Grip)
- MPN / Part Number: SI-AR-E-LRPLT
- UPC: 708747544961
- Platform Compatibility: AR-15 / M4 / AR-10 (Mil-Spec Lower Receivers)
- Included Enhanced Parts: Shift Pivot/Takedown Pins, Hex Selector Switch, Extended Bolt Catch, Enhanced Mag Catch & Button
- Excluded Hardware: Fire Control Group (Trigger/Hammer), Pistol Grip & Mounting Screw
- Material: High-Strength Carbon Steel / 6061-T6 Aluminum
- Finish / Color: Black Oxide & Anodized Black
- Mass: ~4.2 oz (119.1 g)
