I highly recommend - The Triggered Company The Disruptor AR-15 Forced Reset Trigger 3 Position Drop In Forced Reset Rifle Trigger w/ Ambidextrous Safety Selector

I recommend OpticsPlanet 100%; everything I’ve bought has always been of excellent quality. As for this specific product, I haven't had the chance to take it to an ideal spot to test it out and have some fun yet, but it looks like excellent quality—solid and super easy to install; it actually takes longer to remove and insert the pins holding it to the lower receiver than to install the part itself �. If you don't have one already, I advise you to swap out your buffer based on your rifle's configuration—barrel length, whether you have an adjustable gas block, and whether you'll be using a suppressor. I recommend using anything from an H2.5 to an H3; I installed an H3 because the lower receiver I'm using will serve both an 11.5" 5.56 upper (suppressed) and an 8.5" .300 Blackout upper (suppressed). I installed it on a PSA "Sabre" Forged 11.5" 5.56 upper, and it fits perfectly without any modifications or the need to file down the lower receiver (I've heard of others having issues where they had to file the inside of the lower a bit). I also recommend buying this specific one from OpticsPlanet because it comes with the ambidextrous safety selector and—at the time I bought it—was priced fairly. Thanks to OpticsPlanet for the really fast shipping; you’ve improved in that area, and believe it or not, for some of us, that’s a key reason why we look to you first before other companies—in addition to the excellent value for money your products offer.