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wurger · June 24th, 2011, 01:48

I did something similar a couple of months ago. Shooter's Design USP Tactical System 7 slide/outer barrel + internals from a KWA KP45 (NS2) + OD frame from a KSC USP Tactical System 7 (Japan version). Simple upgrade, everything works great. The only problem I encountered was the front sight. MAJOR pain. The internals from both the Japan KSC and US KWA fit and function in the SD slide.

The problem with the Japan parts is that the recoil spring is weaker as it is designed for duster gas. The SD slide was too heavy for the spring and wouldn't always slide back enough to cycle the gun.

The build looks so nice I'm almost afraid to field it.

June 24th, 2011, 01:48	#11
wurger Trader rating Join Date: Apr 2011 Location: SoCal, USA	I did something similar a couple of months ago. Shooter's Design USP Tactical System 7 slide/outer barrel + internals from a KWA KP45 (NS2) + OD frame from a KSC USP Tactical System 7 (Japan version). Simple upgrade, everything works great. The only problem I encountered was the front sight. MAJOR pain. The internals from both the Japan KSC and US KWA fit and function in the SD slide. The problem with the Japan parts is that the recoil spring is weaker as it is designed for duster gas. The SD slide was too heavy for the spring and wouldn't always slide back enough to cycle the gun. The build looks so nice I'm almost afraid to field it.