The Jing Gong G36K now in stock at Gunner Airsoft. The G36K (K - Kurz or short) has a shorter barrel  and it also has a shorter handguard. The rail at the bottom can allow you attach accessories and also still accommodate a grenade launcher such as AG36. Costs around US$88, which is a steal. It's 387fps out of the box, and comes with a hi-cap magazine and the usual battery and charge compliment.