A quick presentation by Weapon762 of the RGW Airsoft DA Sandman-S Style Silencer Set available at their online store... "The RGW Airsoft DA Sandman-S Style Silencer Set feature industry-best QD system for fool-proof quick one-handed mounting. No seizing and minimal point of impact shifts with this design. The mount features matte black finished stainless steel construction for the ultimate durability.