<Temporarily out of production>
THE AR15 870 CQB MK-IV STOCK ADAPTER SYSTEM
The AR15 870 CQB is the original high tube adapter and long rail concept, S&J Hardware has been producing this product since 2006, and it has been on the market since late 2002.
Many since have copied the concept but have not managed to keep the compact and streamline profile.
Stock adapter: Heat treated aluminum casting
Rail: 1-pc machined bar stock 6061T6 M1913 mil spec
All parts milspec hard anodized finish
All parts made in Canada