Extreme Service fixed sights for your 1911 pistol
HD-006-S/U (Square or U Notch)-T2 Night Sight for Springfield TRP and standard BoMar cuts.
HD-006-S/U-T1 Night Sight for Springfield TRP and standard BoMar cuts
Rear Sight for Standard BoMar Cut, Plain Black
Extreme Service Night Sight
Extreme Service rear sight "Blank"
Loctite 262 thread locking coumpound
AKA - The truth about sight heights!