The Scythe(R) STM is a stainless steel version that maintains all of the quality features from the Scythe(R)-Ti but uses different material construction. It's intended for harder use applications due to its durability. The Scythe(R) STM is even full-auto rated with no barrel restrictions. It's also modular at one baffle shorter than the Scythe(R)-Ti in its short configuration, and two baffles longer in its long configuration for maximum sound suppression. The Scythe(R) Series suppressors handle calibers ranging from .223 REM/5.56 NATO all the way up to .300 RUM. They ship with a new radial tool, a Bravo tool, a basic tool, a 5/8 x 24 titanium direct thread mount, and a .30 cal aluminum Single-Port Anchor Brake. *Lead projectiles are not recommended for use with any of our sealed suppressors