What stall force do I actually need in a massage gun?

For general post-workout soreness and desk-job tightness, 30–40 lb of stall force is plenty. Serious athletes working on dense muscle groups (glutes, quads) tend to look for 50+ lb, which is where models like the Mebak 3 (rated at 53 lb) come in. Mini guns trade stall force for portability.