G&p SAI taper metal body for m4 electric gun

New amazing anodized aluminium body for m16/m4
official licensed by SALIENT ARMS Int. with unique serial number
hi quality finish with anti scratch process
short pipe tube for wiring and crane stock ready
exagonal enlarged assist knob and taper barrel thread (compatible with standard and taper barrels)
SAI lower body with finger rest for better grip
anti snatch receiver pins with retention spring

comes with:
metal port cover and assist knob
receiver pin set
real type bolt and bolt cover

fits Marui, G&P, G&G, KA,Dytac rifle and compatible m4/m16 series