FYI for the 110 owners out there. The OEM aluminum butt plate is 4.5" H x 0.5" W x 1" L. So I just bought 6061 aluminum bar stock of those dimensions (comes in minimum 2' length for $8) and machined out the same bolt holes (upper is 3/8" and is pinned with a 1/8" pin, and the lower is 1/2")...