Replacement main piston spring for Chinese B3 air rifles. These springs were manufactured by the Shanghai Airgun Company and are specially packaged by Archer Airguns.
Requires an airgun spring compressor and specific knowledge to install. Do NOT buy unless you have the appropriate equipment and understanding to do this.
Does not fit interchangeable barrel dual caliber models with the side locking screw fitting such as the SS1000.
DO NOT DISASSEMBLE your air rifle for any reason unless you know what to do and how to do it safely. You may risk serious injury or even death! If you have any doubts, you should contact a professional airgunsmith. Dis-assembling the air rifle will invalidate the Beeman warranty on your air rifle.
Archer Airguns cannot provide support for fitting this parts kit.