I recently ordered a Harris Bipod, ARMS #36 rail extension, and ARMS #22 throw rings from these guys.  Mike gave excellent pricing and was extremely helpful on the phone.  He even called ARMS to find out what combo of rail and rings I should have to elevate and extend my Leupold for proper eye relief.  He also had ARMS send their products directly from their factory since he did not have them in stock.  I highly recommend this outfir and will definitely use them again.