this kit is for the Glock 21 or Glock 20. 

I got this kit from a friend. I was going to see if it would work on my G40 but it will not. The kit has all the parts to turn your Glock into a foldable pistol caliber carbine type weapon. It has a pistol brace stock so as not to be confused with a rifle. It adds stability when shooting and improves accuracy.  There are many videos online for this product. Check them out.

this is the conversion kit only. No Glock handgun is included.