David, Thanks for your reply. The release plate on the forearm is rectangular as you mentioned. The forearm spring has a tapered point to fit into the forearm lug on the barrel. Unlike the flat style of the early models. Did this change have a specific year of change. Also, the forearm is a heftier style and the muzzle end of the forearm has a radiused indent for your finger to remove the forearm. Forearm checkering is not as tight as the pistol grip. Haven't made a count on the lines. Drew mentioned a cost consideration might have come into play on the replacement barrel. Was there a significant cost or quality difference between the Specialty Nitro steel and Ideal London steel barrels? Randy


RMC