I was stumbling around Gunbroker and found this little gem for sale. This is a 1/2 scale Model 1919A4 Machine Gun made to fire the .22 Cal Long Rifle from a cloth belt. The barrel length is 11" and the overall length is 19.5" with a weight of 10#'s. The front site is a blade type and the rear sight is a flip up tangent. The gun was made by the Tippmann Company of Ft. Wayne In. And it qualifies as C+R.
http://www.gunbroker.com/Auction/ViewItem.asp?Item=108229352
http://www.gunbroker.com/Auction/ViewItem.asp?Item=108229352