Additionally the hammer must also be placed into half-cock to engage the sear and enable double action firing.

[2] The SR-1M variant redesigns and modernizes the handguns frame, adds a lanyard loop behind the magazine, and enlarges the grip safety device for easier usage.

The SR-1MP variant is a further modernization kit of the SR-1M which adds two additional groves onto the dust cover allowing for the user to mount a Picatinny rail adapter onto the lower dust cover section of the firearm for adding accessories such as flashlights or laser sight system.

This kit also comes with a threaded barrel to allow the option of attaching a quick detach suppressor.

The redesign includes a heavier slide with larger stirrations, removal of the locking wedge, and changes to the take down lever.