None of the locking keys of 1913 style provides a great fit for my Streamlight TLR-7X on my Sig Sauer P365 XMacro. So I made one for myself.
If need to deal with real recoil obviously you'd want to print in some durable material. I printed in ASA, oriented side-ways, with automatic support enabled.
The author marked this model as their own original creation.