At the moment, none. The gun is not very happy. And since it's been like that since the LRB was put in, I couldn't tell you. They have the potential to hit 100 yards accurately at 380fps, or so I've heard. I hope mine gets that range once I finish tweaking it.
That Asahi actually didn't start that way. Good old SniperX had this thing for sale. I think he did the mods himself, I'm not sure.
Anyways, thanks very much for the compliments. A lot of work has gone into this gun and it's good to see others like it.
Here's a parts list:
Kokusai Trigger Valve
Asahi Bushmaster Internals
JAC M4 Lower Receiver
Colt M4 Upper Receiver
AS4L Custom Precision LRB
NC Star 3x-9x Illuminated Scope
Houge M4 Rubber Pistol Grip
AMP Aluminum Quad-Rail Forearm (RIS/RAS)
UTG Rubber Rail Covers
20mm Sling Swivel
I call it an Asahi M4 Cust
Oh I wish I was that skilled. Most of the work was actually done by someone else. It's a real Colt upper reciever that the previous owner stuck Asahi Bushmaster internals into and added to a JAC lower reciever. Sadly, no GBB. But it does have an LRB. Work I did on it was minimal (paintjob, external stuff).