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Daniel Defense presents its DDM4 Rail, an ergonomic design that allows better control of the firearm. It includes limited rotation QD swivel attachment points at the front and rear of both sides for a tangle-free attachment for slings. The top is a continuous picatinny rail that offers enough space for sights and accessories.
 
Regarding compatibility, the DDM4 Rail 10.0 works with low-profile gas blocks on barrels 11” and longer with gas systems at mid-length and shorter. The Rail System comes with all the required hardware (Barrel Nut, Bolt-Up Plate, & Screws), tools (Barrel Nut Wrench & Allen Wrench), and 3 Daniel Defense Rail Ladders made of high-temperature resistant Santoprene.
 
Key features include a lightweight free-floating barrel design, a steel barrel nut, an uninterrupted upper rail platform, integral sling swivel attachment points with limited travel, and a patented bolt-up system. Mil-Spec 1913 Picatinny Rails are also part of the package.
 
The DDM4 Rail is constructed from aircraft-grade 6061-T6 aluminum and finished with military specification type III hard coat anodized. It is made in the USA! Installing the rail system requires a bolt-up system barrel nut wrench and an Allen wrench, both of which are supplied with the kit.