The ECO miniature rifle silencer is very effective. It is optimized for both small rifles and pistols. The ECO silencer is made of aluminum and finished with an anodized surface. The silencer does not prevent the use of open sights or low mounted scopes. Standard threads are 1/2” x 20 UNF or 1/2” x 28 UNEF. The simple design makes maintenance of the damper easy. Sound attenuation 28-32 dB (.22 LR rifle, 1 m to the side of the barrel), 27-30 dB (.22 LR pistol, 1 m to the side of the barrel). The first shot of the gun with a suppressor is as quiet as the following ones, so there is no so-called "first round pop" phenomenon. The reduced sound pressure level eliminates the shooter's risk of hearing damage and also significantly reduces noise in the environment. The silencer meets the requirements set by EU directive 2003/10/EC (140 Pa or 137 dB (C)).