The APA Bolt Knob is an upgrade for the Remington standard style knob. With so many different styles of "tactical" knobs out there how do you know which one is best for you? Only you can ultimately determine that. Rather than try to reinvent the wheel APA simply made 9 different prototypes and lined them up against current designs. 80% of the individuals that were a part of this evaluation chose the current design. This knob gives you better leverage on the bolt handle but is still small enough to fit into the pocket between your index finger and thumb. Its primary purpose is to allow the shooter to run a bolt faster without creating too large of a signature on the side of the rifle. 
 
Can be installed on any standard 5/16x24 standard threaded bolt handle.  When installed, the bolt knob adds additional leverage to the bolt handle