Airsoft Mike unboxes the SIG Air ProForce P226 MK25 GBB pistol and discusses its features, including its full metal construction, gas blowback, and functional decocker. He also tests its performance, noting the quality of the trigger, the adjustable hop-up, and its ability to fire multiple magazines on a single gas fill. He rates it a 9 out of 10 in the end, praising its flawless out-of-the-box performance while mentioning minor dislikes like the strong magazine spring.