The Maxim Defense MS-57 is a durable 5.7x28mm suppressor designed for reliable performance in a lightweight package. Its stainless steel and titanium construction provides strength, while the 6.20" length and 11.7 oz weight balance performance and portability. Brand: Maxim Defense Category: Suppressors Series: MS-57 Caliber: 5.7x28mm Color: Black Material: Stainless Steel / Titanium Length: 6.20" Diameter: 1.50" Weight: 11.70 oz