You can now reload before your magazine is empty and keep your installation pace. The LoadXtend allows for reloading extra clips on the fly, therefore saving time and avoiding unwanted interruptions.
Its exclusive pusher will remain locked into a pre-armed position allowing the tool to be fed by gravity. With less than one strip to go the LoadXtend mechanism engages automatically and operates in a conventional way by simply applying pressure on the the fasteners.
Factory installed on the 250 L or S Series. This high-capacity enhancement accepts 200 nails in the same length of channel as the former regular 100 nail capacity, whereas it can take 300 nails in its extended version.
P-248A - 200 nails / 2 strip capacity
(source Primatech)