Allows for a more compact transport of your AR pistol or rifle in smaller gun cases or packs while out hunting / hiking / camping. Protects and covers FCG + magazine well, also allowing magazine to remain installed while your hiking. Retains BCG in upper while installed as well as a small pocket beneath to keep spare firing pin, bore brush, etc.
When slicing use however may walls you like but be sure to use as many top and bottom layers as necessary to ensure pin lugs are printed solid so they don't shear off during normal use. This can also be forced using the support blocker feature inside of the lug bases and selecting the option to print as solid.
Two variants of this model are published here.
Rev.1 - Regular pack block Rev.1 with slots for strapping to be passed through if it is to be secured to outside of pack.
Rev.1.1- Pack block Rev.1 but the slots have been removed and the top and bottom mounting surfaces are now in closer proximity to each other for an even tighter package.
These will not work if you have an AFG installed. Preferably see Rev.3 model of my page for a carry block that allows for this provision as well as folding buffer tubes.
The author marked this model as their own original creation.