First, the company started with a ground-up revision of the lower receiver, which now features features last-round lockback and a streamlined look. An upgraded mag release offers better leverage and an improved feel. JP also flared the magwell for easier reloads.
The company also designed a new, dedicated 9 mm upper receiver with dual-charge handles that's much lighter and sleeker than the PSC-11, which was used on the dual-charge version of the GMR-13. This upper comes with a choice of brass deflectors, including a larger-profile version for left-handed shooters.
Customers can buy complete GMR-15 rifles that are fully customizable in JP’s online Rifle Builder. Complete rifles offer the choice of three uppers: the dedicated 9 mm upper, the JP-15 forged upper or the CTR-02 top-charge billet upper. For speedier delivery, JP Enterprises will offer two GMR-15 Ready Rifles: a 14.5-inch pin-and-weld and an SBR.
JP hasn’t forgotten the home builder either. Upper and lower receiver kits that include all the proprietary components will be available for purchase.
"We have an impeccable track record for 9 mm PCC function," JP Enterprises founder John Paul said. "Reliability is paramount for all firearms, especially those used for military, law enforcement, self-defense, or competition. The GMR-15 will continue our reputation as "the ones that work" in the PCC market."