Solid Steel, Won't Break
Provides a tighter barrel/receiver lockup for improved accuracy.
Holds barrel firmly in position, won't shoot loose or break when
torquing into place. Replaces factory block with no modification to
gun or stock.
Big Book Catalog, Issue:66, Page:153
New Product Supplement, Issue:515, Page:000
SPECS: O-1 steel, in-the-white. .880" (22.4mm) long, .5"