Specna Arms SA-B03 ONE M4 Carbine. Very short play time so very few marks on the externals. Comes with Flip-up rear sight & integrated flip-up front sight.
Internals : No internal mods to gearbox: Unopened from factory. Standard motor swapped for ASG CNC Ultimate 18000 RPM motor. New M90 spring fitted: Hops 0.30g @ 270- 275.
Externals : Birdcage muzzle device swapped for custom CNC unit, standard Stock replaced with Cyma Crane Stock w QD. No other external Mods
Standard motor was truly terrible, so CNC Ultimate was installed to retain standard speed & gearbox load/stress, but add battery efficiency.
Happy to answer any questions.
Listing ID: 1946ab9311a8b077
