For use only with the Hybrid 46, this mount adapts the Hybrid 46 to accept pistons for use on handguns. A separate piston is required for this mount. Quality pistons in a variety of thread patterns are sold separately - CLICK HERE With the Spring and Piston removed, a 3-Lug mount can be inserted into the threads of the Bravo Piston Mount, allowing for use of a 3-Lug Mount with the Hybrid 46. This mount includes: piston housing, piston spring, and a spring retainer. SKU: AC1417