Just bought a Atec mod (CMM-4) for my Mauser M03, which is threaded M14x1 and has a spigot.
Just noticed that the mod states that it is cut for m14x1 'no spigot'. This means is screws on fine but the base of the mod doesn't fit flush to the shoulder of the spigot; there is about a 1cm gap.
Does this matter ? The Atec cut for M14x1 'spigot' is apparently a special order item, only the 'no spigot' is standard, so I'd have to return and await a special order. I'm not really too fussed about the aesthetics of it not fitting flush but obviously don't want any safety or accuracy issues.
Grateful for your thoughts.