Table of Content
A drop in trigger comes in a small case, you literally drop it into the trigger well, aline the pins, and you're done! Normal triggers require some bending of springs and setting two or three parts on top of each other and getting it all alined before placing the pins. Check out the LaRue Tactical MBT 2 stage trigger. Smooth, with a crisp break, and at $89 you can't beat the price. I put LaRue Tactical MBT 2-stage triggers in all of my builds.

On the other hand, the curved trigger has a bit more normal thickness, which is always great. Overall, the Timney version seems to be a brand used often by online reviewers/users. Word of advice — the Timney Drop-In Trigger is pricier than the two other triggers so far. But, if you have the funds, it’s a wise investment.
Velocity Triggers AR-15 Curved Trigger
Geissele used to be the gold standard when they were one of the few quality trigger makers for an AR-15. Now, there are so many others out there. Look into Wilson Combats triggers, also Blackout Defense.

I don't see the value in $200+ triggers. POF drop-in is nice for $115 if you shop around. I was able to get one for $100 new off eBay recently.
Making Your Best AR 15 With Trigger Upgrades
If you go that route, definitely buyer beware. As to their customer service, they will throw triggers at you all day, doesn't mean you can trust them not to fail when it matters most. Love that you can put a measuring stick so to speak.. I Went with the Hyperfire Reflex and I'm very happy with my 2.5 lbs Trigger pull.. Was gonna order a CMC...this is less than 1/2 the price for a 2.5# trigger. Just ordered one, so we will see how it works out.
Geissele Triggers makes some of the best triggers on the market and the five we looked at represent a fraction of triggers they produce. They are currently working on triggers for the Steyr AUG and SIG MCX and have a very capable FN SCAR Trigger in production. Each Geissele triggers is thoroughly hand inspected at the factory to ensure it meets Geissele’s high standards before it is packaged.
Hiperfire ECLipse
Nothing against LaRue at all, just haven't tested them. The fact that geissele and larue didn’t even make the cut and all that other trash did completely destroys your credibility. I'd like to throw a shout out to LaRue's MBT-2S. Great two stage at a good price. I have one on my Aero AR10 and one in my currently building AR15 in 6.5 Gendel. 3 friends that hunt coyote have had failures with cassette style triggers.
The SSA-E is at the edge of my limit...and even then whatever extra voodoo Bill does to make it "E" probably won't make it into my 20k bullet-hose AR. Have SSA in my woods companion/usually nearby carbine. SSA-E in gun with an optic; different roles.
The Wilson Combat TTU is an incredible trigger. There was no reference to personal experience with any of these triggers. This was just a regurgitation of the marketing and advertising descriptions for these triggers. Did the author even use any of these triggers. Hell, I could of wrote this article just by visiting the manufacturers websites. I bought another more recently that was a collaboration with LanTac and CMC.
It's probably my favorite out of their entire lineup. But it's probably a bit too light for home defense/duty. Especially depending on your experience level. If you learn how to use the two stage trigger you will probably like it and most people will be notably more accurate and consistent with it over a single stage trigger .
There are no internal screws to tighten against the pins, nor the worry that they will back out while firing the rifle. There are no rivets or staking required and the springs are captive. LaRue MBT2S for $87, damn fine 2 stage trigger for much more money. I have a SSA-E also, it is very light on the second stage and I would not trust it for a home defense rifle.
This model can be purchased in either curved or flat triggers, plus with the adjustable pull weight, the choice is a no-brainer. The SD-E is the same just a straight trigger bow. Both are smooth and have a good break. I had both, but I switched the Geisselle's I had out for an Elftmann and a Triggertech, I already had an AR-Gold. For carbines I went with single stage 3#-3.5# triggers.
The TriggerTech is adjustable and made of tough stainless steel, with every included part corrosion resistant — guaranteed. Triggers made by TriggerTech operate without sliding friction. This company’s triggers are manufactured using their patented Frictionless Release Technology.
We do recommend that you find your own sweet spot on this one as the key to accuracy in shooting is consistency and repeatability. That may be the one downside to this trigger for some shooters as the curve in the typical trigger bow gives a muscle memory followed by a familiar feel of fingertip placement. The uniform flat dace lacks this, but with enough practice, your fingertip should naturally return to that sweet spot. We like to think of this as combining the best aspects of a target trigger with a combat trigger. It is a non-adjustable two-stage trigger pre-set to 4.5 lbs. I would agree that with several other designs, weak springs, low-mass hammers and thinning out certain parts ultimately will yield a problem.
Single-stage AR Triggers
I can't remember the pull weights for it, but it's probably not the one you'd want to start with if this is your first trigger by Geissele. And the Super Tricon, which is basically just a slightly tweaked version of the SD-C . For a geissele trigger you want the SSP. I would recommend taking a look as a cmc though. I have a cmc and for a single stage it’s probably the best out there.
All great triggers I have not yet had the pleasure of shooting probably less then 2/3 of them but from what I hear all are great trigger. Unfortunately I do not know the pull weight. I have no way to test that, but what I did was, I took a Bull Moose Tactical flat faced trigger, and this was a surprise to me, instead of buying the BMT matching Hammer. After I polished only the machining marks out of both the trigger and hammer, and like I said before I was surprised with the results, and all in all spent maybe $60.