Yes I have! It's VERY possible since my country have used them for military use since the 70's or earlier, and also all neighboring countries has, as well!! It's extremely easy and cheap to find parts, at lest in scandinavia :D
yoo du musst's dir ja nicht anschauen, also selber schuld. wenn's dir nicht passt dann klick einfach auf das kleine rote kreuz rechts oben in der ecke !