I had one for a short period 2nd hand.. they’re ok at best. I did have a ND with one, I was pointing down range naturally however I never trusted it after that.  
	 
 
	I can’t remember the ins and outs of it at the moment but something to do with the safety and the slide being charged.  
	 
 
	Safe to say it moved on.  
	 
	I felt materials were ok at best.