Q ACC-SW-300-13IN-UPPER Sugar Weasel .300 BLK 13" UpperThe Q, LLC. Sugar Weasel .300 BLK 13" Upper, with part number ACC-SW-300-13IN-UPPER, is a versatile component for AR builds. Featuring a 13" barrel chambered in .300 Blackout, this Q ACC-SW-300-13IN-UPPER does not include the bolt carrier group (BCG). It offers compatibility with Q LLC's Sugar Weasel platform and is suitable for customization in AR projects. Users can personalize the BCG according to their preferences. Q LLC's Sugar Weasel Upper is an excellent choice for upgrading your original Q Sugar Weasel rifle/pistol or crafting a custom AR build. Available in three variations, including a 7” .300 Blackout barrel, a 13” 5.56 NATO barrel, and a 13” .300 Blackout barrel with an adjustable gas block, these uppers offer versatility and performance. All configurations feature an M-LOK compatible handguard for accessory attachment and a 12 o'clock Picatinny rail for customization. It's important to note that the bolt carrier group and charging handle are not included, allowing users to select components based on their preferences. With Q LLC's Sugar Weasel Upper, you get a high-quality foundation for a personalized and high-performing firearm. Available Options:7” .300 Blackout barrel with a tapered 1:5 twist and 5/8x24” threads13” .300 Blackout barrel with a tapered 1:6 twist, 5/8x24” threads and Q LLC’s adjustable gas block in a pistol-length gas system13” 5.56 NATO barrel with a tapered 1:7 twist and 1/2x28” threads Q, LLC. Sugar Weasel .300 BLK 13" Upper *BCG Not Included* ACC-SW-300-13IN-UPPER