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Went to a swap meet over the weekend, I was looking for parts and anything usable and cheep. I need to rebuild a sad/old/crippled M4 we've had forever and lucked onto a kid with what looked like a parts gun perfect for my needs. He said it was NFG (not firing good) and could never figure out how to fix it. It was missing the read stock and the tip of the barrel was bent, like it was dropped without a flash hider. The mag catch and a couple minor cosmetic bits were missing and it was also missing the motor. He wanted $50, I offered $40 and he took it.
It was a KWA CQB full metal M4 with a free floating RIS. I grafted the RIS to my son's ICS M4 since he wanted a cleaner look without that triangle sight, then I cracked the gear box.
Inside the GB I found a 7 steel tooth ICS piston with aluminum piston head, reasonable cylinder and spring, high-speed PERFECTLY balanced and shimmed gears and a bad trigger connector. The trigger connector had broken at some point, he 'fixed' it with a screw that caused the contact tabs to touch and the wrong spring for the trigger assembly.
Once that was replaced and it was re-assembled, the thing SCREAMED!! So I scavenged the bits from the gun I WAS going to repair and built this out into a nasty CQB gun. As for the original M4, it's going to be re-built into a DMR when I can get the parts!
It was a KWA CQB full metal M4 with a free floating RIS. I grafted the RIS to my son's ICS M4 since he wanted a cleaner look without that triangle sight, then I cracked the gear box.
Inside the GB I found a 7 steel tooth ICS piston with aluminum piston head, reasonable cylinder and spring, high-speed PERFECTLY balanced and shimmed gears and a bad trigger connector. The trigger connector had broken at some point, he 'fixed' it with a screw that caused the contact tabs to touch and the wrong spring for the trigger assembly.
Once that was replaced and it was re-assembled, the thing SCREAMED!! So I scavenged the bits from the gun I WAS going to repair and built this out into a nasty CQB gun. As for the original M4, it's going to be re-built into a DMR when I can get the parts!