AR-15 15 trigger assembly diagram

First up in a series of about eight AR-15 drop-in trigger reviews are the Elftmann Tactical ELF Match and 3-Gun triggers. I’ve been playing with these since early November and — spoiler alert — I like ’em a lot. That said, I have no way of testing out claims such as “incredibly fast lock time.” Actually, this may be changing as we’re working on borrowing a Dvorak TriggerScan to objectively compare all of these AR triggers back-to-back, so stay tuned. Regardless, the ELF triggers have a couple of features that set them apart from the pack . . .

Want to know what it feels like? The video above, complete with close-up trigger pulls, is your best bet.

Completely unique to Elftmann is the use of roller bearings in the trigger and hammer pivots:

This is supposed to result in smoother and faster operation. Again, I can’t measure whether it’s faster, but the trigger and hammer certainly do move smoothly.

Speaking of faster, “lock time” is the delay between the trigger breaking (the sear releasing the hammer) and the round igniting. A faster lock time generally means better accuracy. The concept becomes crystal clear if you imagine something like a flintlock rifle, where a meaningful delay exists between trigger break and projectile leaving the barrel (slow-mo footage). Even counting in milliseconds, it doesn’t take many of them to give you enough time to screw up a shot by moving the muzzle from “perfect” to “not so much” during the lock time delay.

Elftmann originally said that its 3-Gun trigger has the shortest AR-15 trigger lock time on the planet, but they’ve scaled it back to “incredibly fast lock time” until they can scientifically prove just how fast it is. They are quite confident, however, based on the fact that it has a particularly lightweight, skeletonized hammer, a full-power hammer spring, and the aforementioned roller bearings. Many or most aftermarket triggers use lighter hammer springs to reduce pull weight, so it makes sense that a full-power spring swinging a light hammer would be quick. If the TriggerScan loan pans out, we’ll actually be able to measure lock time accurately (as well as take-up, creep, overtravel, and pull weight).

That full power spring, whether with the skeletonized 3-Gun hammer or the solid Match hammer, should also ensure reliable primer ignition. I did shoot NATO-spec 5.56 as well as Russian steel stuff, both of which have hard primers, and had zero issues.

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