*Match Trigger Compatibility.
The KP-15 is compatible with some cassette style match triggers including the KE Arms DMR and SLT units. The retention system of these triggers with D-Clips in the bushings to retain the fire control pins makes them better suited for use in the KP-15 than other designs that require captured pins.
The hammer pin area is wider for durability. Standard AR15 hammer pins can still be used but we offer a longer hammer pin for customers preferring a flush pin for aesthetic reasons. If your match trigger uses captured or anti-rotation pins to secure the trigger in the lower, you may have problems using it in the KP-15 if you don’t use our captured pin set.
Trigger cassettes that use screws that tension down into the lower can damage the lower if the screws are tensioned too far. These screws should not be relied upon to secure the trigger in the lower, only for taking up the slack below the the trigger housing. Use our captured pins to secure these cassette style triggers.
The front lower portion of the KP-15 fire control area has a radius. This is a fact of plastic design for mold release and strength. Some cassette style triggers with large housings that fill the entire fire control group may not fit. Do not force a cassette trigger into place; you may damage your receiver doing so.
Known Compatible Match Triggers
KE Arms DMR
KE Arms SLT-1
KE Arms SLT-2
Wilson Combat TTU (uses D-Clip Retention like KE Triggers)
Fits But needs KE Arms Captured Pins
Rise Armament RA-535
Elftmann 3 Gun Trigger
AIM Surplus SSAT
Timney Impact AR Trigger
Timney DH3 (also needs Timney Steel Plate)
POF Cassette Triggers
Velocity Systems
Geissele and LaRue triggers work in the KP-15 but are not compatible with our ambi selector because their trigger tails are thicker. They will work with our mil-spec selector.
Known Incompatible Triggers
Triggertech- Does not fit in fire control pocket; holes do not line up due to housing size.
CMC- Does not fit in fire control pocket; holes do not line up due to housing size.
PSA - Does not fit in fire control pocket; holes do not line up due to housing size.
Midwest- Does not fit in fire control pocket; holes do not line up due to housing size.
Rise Iconic- Does not fit in fire control pocket; holes do not line up due to housing size.