I recently purchased a 10" Contender barrel in .32 H&R Mag. This barrel came with a front sight but no rear sight. I would like to bring this barrel back to original condition with the proper sights. My question is which variation of the Contender sight fits this barrel? This barrel has the removable type front sight with a low front blade. The information I have says these barrels were produced between 1985 and 1990. Thanks in advance for all information.