SKU: DD23-088-19020-047
UPC: 815604015134
MPN: 23-088-19020-047
The Daniel Defense M4 Upper 300blk 10.3" Blkt Upper is a high-performance upper receiver assembly designed for operators who need subsonic rifle capability in a compact format. This upper is ideal for law enforcement tactical teams, military personnel, and civilian shooters focused on sound signature reduction while maintaining reliability and accuracy.
With a 10.3-inch barrel chambered in .300 Blackout, this upper is optimized for close-quarters engagements and suppressed shooting scenarios. The design ensures effective downrange energy while functioning reliably with sound suppressors, making it a critical asset for tactical operations requiring stealth. The durable protective coating enhances resistance to corrosion and wear, suitable for various operational environments.
This Daniel Defense upper is compatible with standard mil-spec lower receivers, allowing for straightforward assembly for gunsmiths and experienced builders. Its compact profile and balanced performance make it a preferred choice for those who prioritize agility and terminal performance in their shooting applications.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.
