Set it up one of three ways - Advantage Arms Conversion Kit , 22 LR, 4.02 Threaded Barrel, Fits PSA Dagger

Works great as is but if you add a reflex site try to keep it around 65 gram or less and be sure to use a suppressor with it so it cycles reliably. Follow manufacturer ammo recommendations - CCI mini-mag and REM Golden bullet work great. Tried to mention a resource that I used but OP pulled that review… none-the-less do your homework and you won’t regret it.