And if it's not your rifle then tinkering with it will generally get you into trouble. Mine belong to me and I like to futz with stuff so you'll see non-standard things on mine. I work over the selector detent and spring too so that the selector operates easier and doesn't make so much noise.
The socket setscrews can be found at Amazon: #4-40x1/8". I generally cut the spring off to subtract the length of the set screw (NOTE: edited because of defective memory) and it works fine. Make sure that the tap is started square, thread up to 1/4" deep and DON'T BREAK THE TAP.
The socket setscrews can be found at Amazon: #4-40x1/8". I generally cut the spring off to subtract the length of the set screw (NOTE: edited because of defective memory) and it works fine. Make sure that the tap is started square, thread up to 1/4" deep and DON'T BREAK THE TAP.