Parting this classic airsoft Ive had for years. Asahi airsoft were custom airsoft guns out of JAC body. Mags are airfed and the airsoft gun itself is external power. Last time I used this gun was probably op:Irene in MUTC. Anyways ill post a link on the details of this piece. I havent tested this gun in years but this should be an easy fix of your a techy guy. Hoses and orings is all you need.