I run a TRS-25 on a 45 degree angle on mine with a QD mount. I didn't want to spend the money on the swivel mounts either. It has worked out well for me. I usually use the open sights without problem and can consistently put a fist sized hole in a target at 50 yards off-handed, and that is with old eyes. The RDS helps me acquire the target faster. It is your choice. Enjoy your rifle.