David, there are probably some very early 1960 guns with Chicopee Falls barrels that are square threaded, and others that are V threaded. If the barrel was threaded at Chicopee Falls it would have been square and I bet they would have square threaded a receiver to use it up rather than toss it. If the barrel hadn't been threaded yet, it probably would have been done with V threads. If I recall, we've seen a very few samples of both - Fireball2's barrel is probably one of the latter.

But guns put together to use up leftover parts isn't what we are really talking about... We all know never to say never.

But all new production of barrels at Westfield was V threads as far as anybody has been able to tell. And no rifles made And assembled at Chicopee Falls with 1959 or earlier date codes should have V threads.

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