Sharps Bros The Jack Gen2 Stripped Lower — 7075-T6 Aluminum

The Sharps Bros The Jack Gen2 is a billet, stripped lower receiver for AR-15 platform builds. Machined from 7075-T6 aluminum and finished with a black hardcoat anodize, the Gen2 introduces refinements such as a threaded bolt catch pin, reduced weight, and updated styling. It ships as a stripped lower and requires a lower parts kit, buffer assembly, and stock to complete a functional firearm. The design emphasizes compatibility with mil-spec internal parts and common magazines for straightforward assembly in a custom build.

Key Specifications

• The receiver is machined from 7075-T6 aluminum.
• The finish is black hardcoat anodized.
• This listing is a stripped lower receiver.
• The unpopulated weight is 11.1 oz.
• Compatible with mil-spec AR-15 internal parts and most aftermarket mil-spec upper receivers.
• Accepts GI-standard and PMAG-style magazines.
• Gen2 features include a threaded bolt catch pin.
• Includes an oversized integral trigger guard and a beveled magazine flare.
• Marked as Multi caliber.
• Overall dimensions are listed as 2.30 x 4.45 x 8.80 inches.

Durable, CNC-machined, and finished for corrosion resistance, The Jack Gen2 provides a solid foundation for a custom AR-15 build where weight savings, fit, and parts compatibility matter. Its billet construction and refined features make it well-suited for builders who prioritize high-quality components and a clean, functional aesthetic.

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