JMB Hp3 is a handgun that appears in the Resident Evil 2 remake.
The JMB Hp3 is exclusive to Claire, it is inside the trunk of a police car at the Parking Garage, it requires the Car Key in order to open it. The key is at the outside part of the Firing Range inside a Tin Storage Box.
"13-shot, 9mm handgun. First to use double-stack magazines, it was a marvel of firepower at the time due to how many rounds it could hold."
— Inventory description
"9mm弾を13発装填できる、脱着式の複列弾倉を初採用したハンドガン。 グリップ内の装填数の多さによる 火力の高さは、開発当時は驚異的だった。"
— Inventory description - Japanese
By default it has a maximum magazine size of 13. The gun has a laser sight attached, which omits the need of focus upon moving or shooting.
A High-Capacity Mag. can be found inside a safe in the Waiting Room by inputting 6 to the left, 2 to the right, 11 to the left, as seen in the Confiscation Report file. It comes with a prefixed Laser Sight, which eliminates catch time / focus and allows for consistent potshot without any delays.
While it does similar damage per shot to standard SLS60, its sheer capacity, fast reload speed and lack of need for focus time for potshot overshadows the latter completely until one obtains the Reinforced Frame.