Yes, the Buds Exclusive Tisas A1 Service Enhanced is rated for +P ammunition, but with manufacturer-recommended limitations. As with any firearm, consistent and excessive use of higher-pressure rounds like +P can accelerate wear on parts compared to standard velocity ammunition.
If you are using +P rounds for defensive purposes or occasional testing, the firearm can handle it without issue. The pistol features a durable forged steel frame and slide, along with Series 70 components and machined internals, which provide a robust foundation for this type of use.
However, if you plan to shoot thousands of rounds of +P ammunition through the pistol, be aware that it may require more frequent maintenance or parts replacement than if you stick with standard-pressure .45 ACP ammo.

Arvin Sir,
The BudsGunShop Exclusive Tisas A1 Service Enhanced is rated for +P ammo. While occasional use for testing is fine, frequent, heavy use can accelerate wear, especially on parts like the recoil spring. Regular maintenance and inspections are recommended if shooting many +P rounds. As long as the rounds stay within .45 ACP specs and are not "+hot," the firearm should handle them well.
Hope the above information helps Sir Arvin, take care and enjoy 🙏🏻