Just Right Carbines Gen 3 JRC M-Lok Rifle 9mm 17 in.

About this product

The Just Right Carbines Gen 3 JRC M-Lok is a semi-automatic 9mm pistol-caliber carbine designed for range use, training, and general-purpose applications. This state-compliant CT/NJ/MA configuration features a 17-inch unthreaded parkerized 4140 chromoly barrel and an ambidextrous control layout that allows the charging handle and ejector to be configured on either side. Built on standard AR-platform interfaces, it accepts common AR parts for maintenance and customization and is specified to use M&P magazines.

Key Specifications

• The carbine is chambered in 9mm.
• The barrel length is 17 inches and is unthreaded.
• The barrel material/finish is parkerized 4140 chromoly.
• The handguard is 13 inches and is M-LOK compatible.
• The action is a semi-automatic pistol-caliber carbine.
• The control layout is fully ambidextrous for charging handle and ejector placement.
• The receiver, trigger housing, and magazine well are machined from 6061 T6 aluminum.
• It features a top-mounted Picatinny rail and a pinned buttstock with a standard M4 buffer tube.
• The overall length is 34.25 inches.
• Designed to accept M&P magazines and can convert to other pistol calibers with a conversion kit (sold separately).

With familiar AR ergonomics, ambidextrous controls, and M-LOK modularity, the Gen 3 JRC provides a practical, user-friendly platform for range work and general-purpose use. Its combination of a 17-inch parkerized barrel and modular accessory mounting delivers a balanced platform for shooters who prefer a pistol-caliber carbine built to common AR standards.