VBK, the 2-in-1 Vise Block

We at TWO TWO THREE Innovations are always looking for ways to make building the AR-15 easier (and less expensive!)  Our newest offering is the VBK, the 2-in-1 vise block.  There is no more need for separate upper and lower vise blocks, this one does it all.  One side installs in the lower magwell to hold the lower receiver securely in the vise, the other side securely holds the upper assembly so the barrel nut and flash device can both be torqued properly.