• 【Fitment】Berrel External Diameteter: 23mm to 23.5mm
• 【Bulllet】Glow-in-the-dark BBs Green/ Redl Available(not including), ACETECH tracer BBs by flashing them with a burst of light before leaving the airsoft barrel so that they remain luminescent in flight for use during nocturnal games.
• 【Versatility】Suitable for more than 90% of airsoft shotguns, like airsoft STR-12, M870, etc. whose barrel would not be covered by handguard, so that you can installation.
• 【Installation】Stick gaskets on the both sides of fixture and put the O-Ring in the O-Ring groove. Press and push the QD button, rotate and remove the mount. Turn on the tracer and set it up by Power/Tracer Set.
• 【NOTICE】Please check your barrel external diameter before order. The clsmp fits 23 to 23.5mm.