I've seen better
These are currently installed on my #1 safe queen. However, I might be replacing them when/if I see a better alternative. To start, the threaded sleeves were too big for my lower. Not a biggie, I just filed them down and voila, they fit snuggly. But then, there's this issue of tightening them. Luckily, I actually scrounged around and found two 1/16" Allen wrenches. Is it too much to ask to include at least ONE small Allen wrench to aid in installation? Even cheap, China-made stuff comes with single-use tools... Don't be cheap.
They work, with a catch
Installed in my APF AR 308 lower. As other reviewers have mentioned, they were a hair too long for my lower, but that was easily solved with a Dremel and cutting wheel. The bigger issue I had was with the hex heads. They are tiny little 1/16" heads, and strip out if you LOOK at them the wrong way. That being said, they do their job, and they're cheap. Hopefully I never decide to replace my trigger.
Good idea, poor execution
Remington R-25, no reaming, they were about 1/16" too long S&W M&P 15-22, no reaming, they fit perfect. As others have noted, I spent 30 minutes getting the hardened Loctite off the screws and 5 minutes installing the pins. Of course, the finish was gone from the screws after trying to get all of the Loctite off. Trigger action seems good and I don't think the screws are going to come loose, but will check them anyway. The directions say to apply Loctite red, good luck every trying to get them out, you would be drilling them out with any Loctite (blue or red) being applied. The 1/16" Allen head screw can't take the torque.
