I believe standard stock dimensions for the NS called for a LOP of about 14". Note also this was normally measured from the "Front" trigger of a two triggered gun. Note also this single trigger is set in the rear trigger position, so assuming about a 1" spacing for the triggers, this is most certainly just a standard NS stock. Perhaps the single trigger was ordered for a boy or short armed lady to make it easier for them to shoot without the greater expense of a custom stocking, a use to which it could still well be put.
