The Mossberg JM Pro Drop-In Trigger (brand part no. 96010) is a single-stage drop-in trigger developed under Jerry Miculek’s name for the Mossberg MMR platform in 5.56 NATO, built on the same .154-inch AR-pattern pin holes used across standard AR-15 and AR-10 lowers. As a drop-in unit, it’s designed to install into a compatible lower without the individual pin-and-spring fitting a traditional trigger swap requires. It’s a straightforward way for MMR owners to upgrade their factory trigger feel with a unit built to the same signature-line standards Mossberg developed alongside one of competitive shooting’s best-known names.

Key Specifications

• Built as a drop-in trigger module.
• Part of the JM Pro signature line.
• Chambered platform: 5.56 NATO / .223 Remington (Mossberg MMR).
• Factory set to a 4-pound pull weight with a crisp, single-stage break.
• Overtravel is user-adjustable for a customized reset feel.
• Fits .154-inch AR-pattern trigger and hammer pin holes, the footprint used by the Mossberg MMR.

Frequently Asked Questions

Will this fit my Mossberg MMR? Yes, it uses the MMR’s standard .154-inch AR-pattern pin holes, so it drops into the MMR without modification.

What is the JM Pro line? Mossberg’s signature trigger and accessory line developed under Jerry Miculek’s name.

Buy the Mossberg JM Pro Drop-In Trigger

A signature-line drop-in trigger is a straightforward way to upgrade your MMR’s factory feel. Order it from Mossberg through our Lubbock, Texas gun shop for fast, direct shipping, and browse more AR triggers to finish your build.