I am still pretty new to the MP-15 and have only managed to take it for a lesson and shoot it twice. I don’t get to the range very often as I’d like, but are there ways to train at home to become proficient outside of the range? Thanks.

Get yourself a good pellet rifle and trap, and setup a range at home.

With the Covid shutdown two years ago, I revived shooting pellet guns at home, since all the ranges were closed. After a summer of practicing every day, and still spend the half hour almost every day now to just shoot at home since everything is still setup, I'm shooting better than I ever have, the basic mechanics of it are the same, just about practicing.