Ace1Arms Blastshield Spitfire Tracer Unit Misc. Internals the included adapter allows this

the included adapter allows this to be attached to any inside or outside 14mm ccw threading making this tube fit practically any Airsoft gun with threading out there

you may consult your gunsmith for advancing fitting to solve this issue as well

the hopup unit is always centered

1x spare set of double sided tape

Visible Laser Output1mw(low)/5mw(high)

Ace1Arms Blastshield Spitfire Tracer Unit Misc. Internals the included adapter allows thisCompact tracer unit for better shooting experience in dark rooms or night games Supported Glow In The Dark Tracer BBs Built in high power UV LED technology illuminators Very sensitive motion sensor Rechargeable lithium battery charged by mini USB cable Can be mounted on airsoft replicas with a 14mm CCW threaded barrel Compact Design Blast Mitigation Device Style Mini USB Cable Included Twist Collar On Off Illuminates Trace BBs but Tracer BBs are not