Primary Arms. Not sure if the is the best deal around but it’s a good deal. USPS was $5. After my bonus bucks I came in at just under 55 bucks. Yay me.
https://www.primaryarms.com/sig-sau...utm_campaign=35987&utm_content=product-review
https://www.primaryarms.com/sig-sau...utm_campaign=35987&utm_content=product-review