The Sharps Bros The Jack Gen2 Stripped Lower Receiver (part no. SBLR03) refines the original Jack design with a threaded bolt catch pin, reduced weight, and improved styling. Machined top to bottom from 7075-T6 aluminum, it features an oversized, integral trigger guard and a beveled magazine flare for faster reloads, all marked multi-caliber and fully compatible with mil-spec internal parts and aftermarket upper receivers. It accepts both GI-standard and PMAG magazines and ships stripped, ready for a lower parts kit, buffer, and stock of your choosing.

Key Specifications

• Machined from 7075-T6 aluminum as the Gen2 version of The Jack.
• Fitted with a threaded bolt catch pin for simple installation.
• Built with reduced weight compared to the original Jack design.
• Features an oversized, integral trigger guard.
• Includes a beveled magazine flare for faster reloads.
• Finished in black anodized for a durable look.
• Accepts both GI-standard and PMAG magazines.
• Measures 8.8 inches in overall length.
• Multi-caliber marked and compatible with mil-spec AR-15 parts.
• Ships as a stripped receiver, ready for your parts kit and stock.

Frequently Asked Questions

What is new in the Gen2 version? A threaded bolt catch pin, reduced weight, and improved styling compared to the original Jack.

What magazines does it accept? Both GI-standard and PMAG magazines.

Does it ship with internal parts? No, it ships stripped and requires a lower parts kit, buffer, and stock to complete.

Buy the Sharps Bros The Jack Gen2 Stripped Lower Receiver

Build on distinctive Sharps Bros engineering. Browse more AR-15 lower receivers and order from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.