The WLA AR15 LOWER PARTS KIT STAGE 4 LPK is a premium, complete lower parts kit designed for builders who want a high-quality, ready-to-install solution for their AR-15 lower receiver. This Stage 4 Lower Parts Kit (model WLA-LOW-1013-01) includes all the essential components needed to fully assemble an AR-15 lower receiver, making it an excellent choice for custom builds, repairs, and professional gunsmithing work. Manufactured by White Label Armory, this kit delivers reliable performance and precise fitment at a competitive price.
Why Choose the WLA AR15 Stage 4 Lower Parts Kit?
Building an AR-15 lower receiver requires numerous small parts that must work together flawlessly. The WLA Stage 4 Lower Parts Kit stands out by providing a comprehensive selection of high-quality components in one convenient package. Unlike basic or incomplete kits, the Stage 4 LPK includes upgraded or additional parts that many builders prefer for improved function and durability. This kit is ideal for first-time builders looking for simplicity as well as experienced builders who want consistent, reliable components without sourcing parts individually. With precise machining and quality materials, this lower parts kit helps ensure smooth trigger pull, secure magazine retention, and dependable operation of all lower receiver functions.
Key Features of the WLA AR15 Stage 4 Lower Parts Kit
- Complete Stage 4 Configuration – Includes all standard lower parts plus upgraded components for enhanced performance
- Trigger Group Assembly – Precision trigger, hammer, and disconnector for reliable function
- Safety Selector – Includes safety selector, detent, and spring for positive engagement
- Magazine Catch Assembly – Magazine button, catch, and spring for secure magazine retention
- Bolt Catch Assembly – Bolt catch, plunger, and spring for smooth operation
- Pivot and Takedown Pins – High-quality pins with proper fitment for easy assembly and disassembly
- Additional Hardware – Includes buffer retainer, spring, and other essential small parts
- Model WLA-LOW-1013-01 – Official White Label Armory part number with UPC 00810155160685
Performance and Build Quality
The WLA AR15 LOWER PARTS KIT STAGE 4 LPK is manufactured using high-quality steel components that are heat-treated and finished for durability and corrosion resistance. Each part is produced to tight tolerances to ensure proper fitment within mil-spec and most aftermarket AR-15 lower receivers. The trigger group components are designed to provide a smooth, consistent trigger pull while maintaining reliable reset and safety function. The included safety selector offers crisp, positive engagement in both safe and fire positions. All springs in the kit are made from durable materials that retain tension over thousands of cycles. This Stage 4 kit is particularly well-suited for builders who want a more complete and refined parts package compared to entry-level kits, helping reduce the chance of missing components during assembly.
Technical Specifications
| Product Name | WLA AR15 Stage 4 Lower Parts Kit |
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| Model Number | WLA-LOW-1013-01 |
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| UPC | 00810155160685 |
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| Compatibility | AR-15 / M4 Lower Receivers |
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| Kit Level | Stage 4 (Complete) |
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| Material | High-Quality Steel Components |
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| Finish | Corrosion Resistant Coating |
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| Best For | AR-15 Builds, Custom Lower Receivers, Repairs, Professional Assembly |
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| Key Benefit | Complete Stage 4 AR15 Lower Parts Kit with upgraded components |
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Complete your AR-15 lower receiver with confidence.
The WLA Stage 4 Lower Parts Kit provides a comprehensive selection of quality components for reliable performance.
Important Notice: This product is a firearm component. Firearm accessory sales are subject to all applicable federal, state, and local laws. It is the buyer’s responsibility to know and comply with all applicable laws regarding the purchase and possession of firearm components. Must be 18 years or older to purchase. Keep out of reach of children. This product is intended for lawful use only.
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