Good for you replacing the trigger ASAP! The RA 140 is a decent trigger and waaaay better than the stock trigger. Same goes for the Radian CH and ambi selector switch. I have the same trigger & Radian accessories on mine. They all are great upgrades. Do you have front/rear BUS? Decent optics/mount are nice to have. Something like a 1-4x or 1x6x work just fine. A Magpul MOA pistol grip is inexpensive and improves the feel/grip. Sling, Bipod, M-Lok rail sections, weapon light....all good accessories.