Geissele Automatics
GEISSELE AR15/M4 REACTION ROD
Model:

Reaction Rod , Weight (oz): 36
Geissele Automatics Reaction Rod, 223 Remington/5.56 NATO, Makes The Removal and Installation of Barrels, Flash Hiders, Gas Blocks, and Handguards Much Easier and Simpler, Prevents Marring, 4140 Chrome Moly Steel, Black 10-169