I have never seen one of these marked lowers before and do not believe it is in Windham Weaponry product line catalog with this RARE 10th anniversary laser engraving. 100% live and complete lower, ready for a upper and your near by target range. Marked multi and has a wide variety of caliber to built with it, including the most common 308. It is unknown to me when they will discontinue the engravings, so if your looking for what might be a very limited run, that this is likely the one. Great lower to collect or shoot, all with Windham quality, MADE IN THE USA. We are a brick and mortar commercial store, come by in person or call. NOT FOR SALE WHERE PROHIBITED BY LAW, I SHIP TO ALL STATES WHERE LEGAL. Stock subject to change without notice, sales tax on all sales in state. Credit cards accepted with a 2.99% non cash handling fee. 7 DAY A WEEK, PHONE INFORMATION HOTLINE 52O 790 5017.