The Centurion Arms CMR is a lightweight, free-floating AR-15-style handguard that is offered in both KeyMod- and M-LOK-compatible models. A continuous MIL-STD 1913 Picatinny rail runs the length of the unit, and additional rail segments can be affixed at the 3-, 6- and 9-o’clock positions. Offered in 13" and 15" lengths. Price: $200. Contact: Centurion Arms; centurionarms.com.