The Daniel Defense RIS II M4A1 FSP Assembly (Model Number: 01-004-08030-006) is a black accessory-rail with a free-floating barrel design, featuring hardened steel barrel nut and mil-spec 1913 Picatinny rails. It measures 12.25" in length and weighs 17.1 oz.
Specs
| Model No. | DD0100408030006 |
| Model | M4A1 RIS II FSP Rail Assembly |
| Manufacturer | Daniel Defense |
| Illuminated | No |
| Overall Length | 12.25" |
| Weight | 1.9 |
