The 17 Design and Mfg. Integrated Folding Lower Receiver (part no. IFLR AR-15) is a patented, first-of-its-kind AR-15 lower with a folding mechanism built into the standard operating system of the platform, rather than relying on an aftermarket folding stock adapter. The design began years ago as an idea from a friend of 17 Design & Mfg who would later become the CEO of Shield Arms, and was brought to life as a joint project submitted for the US Army’s Sub Compact Weapon System solicitation, where it was down-selected. Sold stripped, it ships with no internal fire-control parts installed, so you complete the build with the parts kit and furniture of your choice.

Key Specifications

• Features a patented, integrated folding mechanism built into the receiver itself rather than an aftermarket adapter.
• Developed as a joint project that was down-selected for the US Army’s Sub Compact Weapon System solicitation.
• Sold as a stripped lower receiver, so no internal fire-control parts are installed.
• Machined from billet aluminum to mil-spec dimensions for a precise fit with standard AR-15 components.
• Wearable internal parts use S7 tool steel for extreme wear and corrosion resistance.

Frequently Asked Questions

What makes this lower receiver different from a standard AR-15 lower? It integrates a patented folding mechanism directly into the receiver’s operating system, rather than relying on an aftermarket folding adapter.

Does this lower include a trigger or other internal parts? No, it ships stripped, so you supply the fire-control group, buffer tube, and grip of your choice.

Has this design been evaluated outside the commercial market? Yes, the folding design was submitted and down-selected for the US Army’s Sub Compact Weapon System solicitation.

Buy the 17 Design and Mfg. Integrated Folding Lower Receiver, Stripped

Order this 17 Design and Mfg. Integrated Folding Lower Receiver from our Lubbock, Texas gun shop for fast, insured shipping to your FFL, and build around a first-of-its-kind folding platform. Browse our full selection of AR15 lower receivers for more build options.