Daniel Defense DDM4ISR
The Daniel Defense DDM4ISR (Integrally Suppressed Rifle) 300 joins our family of precision-crafted M4 Rifles. The ISR takes advantage of the best characteristics of the 300BLK by integrating key components into one package, eliminating the need for two separate tax stamps.While the rifle utilizes a 10.3” barrel, it
is not classified as an SBR (Short-Barreled Rifle) because the suppressor is permanently attached. The DDM4ISR 300’s sound suppressor is threaded and welded to the proprietary ISR Integrated Gas
Block, bringing the barrel length to 16.145”.While the rifle is at the 16” legal limit, the ISR’s integrated suppressor will require an NFA tax stamp.