Hi Brad,
Thank you for contacting us. Unfortunately our new Mass Driver Hammers with the single action spur are not yet available. I actually do not have a time frame for when we expect those to be available for purchase.
If you haven't already done so, I would suggest subscribing to our email newsletter, following us on social media or keeping an eye on our blog to best be aware of new product announcements. Sometimes we will post teaser photos of projects on our social media accounts, but the newsletter will be used for official announcements when products are available for purchase or pre-order.
Please feel free to contact us if you have any further questions. Thanks!
Jenna Criado