Nintendo's North American online store is now selling the 3DS XL Circle Pad Pro peripheral, which has been exclusive to Japan since late last year. Nintendo will start shipping the $20 add-on April 19.

We've contacted Nintendo to find out if this is exclusive to their online store or indicative of a full-on US retail launch. The 3DS XL Circle Pad Pro is the second iteration of Nintendo's supplemental analog stick, following the original GameStop-exclusive Circle Pad Pro made available alongside Resident Evil: Revelations.

This article was originally published on Joystiq.

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