Price shopping for 300 Blackout Upper? Count on Brownells.com to provide the best selection and prices every day. With 198 300 Blackout Upper and 300 Aac Blackout Upper in stock ranging in price from $2.99 to $2,599.99, you'll find all the best choices available. As the internet's top seller of gun parts and gunsmith tools, we're able to bring you the best products, excellent prices, and reliable customer service every day. We're so convinced you'll be happy with all our 300 Blackout Upper that we offer a 100% customer satisfaction guarantee. If you're not completely satisfied with your purchase let us know so we can make it right. So check out our complete selection of 300 Blackout Upper and place your order online or by calling us toll free at 1-800-741-0015. We're passionate about meeting all your needs for gun parts and gunsmith tools, and we're confident you'll find what you need here. If you have any questions, don't hesitate to give us a call!