This article has been updated 3-7-2019 to reflect product updates and new trigger options.
I keep getting questions about which triggers will work in a CAV-15 MKII based on my old article on the subject
As may be apparent from my video content and articles here, I now work as the marketing director for KE Arms. So I have had ample opportunity to test KE Arms triggers in the CAV-15 MKII receivers; both Cavalry Arms Corp produced units and GWACS Armory produced units. Given my current position it is unlikely I will test other brands of triggers in the CAV-15 MKII.
The DMR trigger fits into the CAV-15 MKII receiver with no modifications required to the lower, unlike the CMC. It also functions without the use of the Big Pin from Cavalry Manufacturing that is no longer available. The DMR works with standard fire control pins and is secured in place with 2 tensions screws on the sides of the housing that place upward pressure on the pins. This does not cause any reliability issues in the CAV-15 MKII receiver that I encountered with other designs that tension against the bottom.
Generation 2 DMRs install easily in the CAV-15 MKII and do not use tension screws. D-Clips in the housings retain trigger module in the lower with regular mil-spec pins.
The SLT Series Triggers also fit into the CAV-15 MKII with no modifications. They use the same D-Clip style retainers in the bushings that the DMR Generation 2 uses. The SLT triggers also eliminate the traditional disconnector in favor of Sear Link Technogy. This makes the trigger more robust as the hammer does not impact any other parts of the fire control group. It also allows for the selector to be placed on safe regardless of hammer position.
The Enhanced Fire Control in NP3 coating is the best option for a shooter looking for a lower cost, but improved mil-spec trigger pull. The hammer and trigger are made from high pressure investment castings. All the engagement surfaces are machined to work optimally together. This combined with the NP3 coating makes for a smooth pull and slick reset.