KE Arms DMR Trigger Review
Trigger upgrades for the AR15 is almost an industry unto itself. There are enough options to fill a range bag, but without a doubt the easiest type to work with is the drop-in style, such as the KE Arms DMR trigger. One nice thing about this design is that the outer shell holds the hammer, trigger and disconnector together as a single unit. This design offers multiple advantages, including ease of installation and parts that are always held in proper alignment, even in home built or polymer lowers.
The out shell of the DMR trigger is machined from aluminum, while the internal parts are made from A2 tool steel, via wire EDM. The aluminum shell is anodized blue and sports the KE Arms logo, as well as made in the USA markings. The tool steel internals are melonited, which produces an extremely hard surface finish. Removing the two hollow pins allows for easy disassembly and annual cleaning of the unit.
Upgrading to the KE Arms DMR Trigger is about as easy as it gets. First push out both of the takedown pins to separate the upper and lower halves and set the upper aside. Then, tap out the hammer and trigger pins to remove the factory trigger parts. It helps to keep a ziploc bag handy to store all of these little pieces.
Now, find a 3/16″ hex wrench to reach up inside the pistol grip. Our goal is to remove the one bolt that holds the grip in place, so that we can take out the selector. Remove the grip slowly while being careful not to loose the spring and detent that the pistol grip holds in place. The selector should just wiggle out of the lower receiver.
For a new build, all of the previous “take apart steps” are unneeded, so we can start here. The trigger assembly just slides right intnigger assem"w26e-gerinstall3.jpg">