Most of us in airsoft think that cloning only happens in the airsosft industry. It does happen in the firearms industry as well. Watch The Firearm Blog review a US-made MP5 clone, the PTR Industries 9CT... "In this episode of TFBTV, James reviews the new PTR CT9 roller-locking pistol with an SB Tactical Brace. This is a high-quality, US Made MP5-style carbine that costs less than an HK MP5 parts kit.