HD22c aka Foldy mc longstocking

lovingly named by r/fosscad a compact variant of the HD22 function tested update 4/29/23 upper needed charging handle slot adjusted update 4/29/23 added a hinge for the stock thats easier to fold and unfold update 5/1/2023 pic upper was fixed, previously the spring channel was too tight update 6/14/2023 added more stock options LBRY Tags: hd22; hd22c; ez22; 3d2a; 3d print