I recently bought a taurus PT1911 with the heinie "straight 8" nite sites and love ALMOST everything about it. All 1911 parts are interchangable EXCEPT the sites. I noticed with 230 gr standard pressure loads,it shoots about 2" low at 15 yards. This might not be a problem with some people,but being an EX competition shooter,I'm a "freak" about my guns shooting EXACTLY to point of aim. That's why I have adjustable sites on all my handguns except strictly close range defense only guns. After an agonizing couple hours on phone,with taurus,heinie,brownells,and midway,with repeated calls and having to dig out dial calipers,I was able to determine taurus makes licensed copys of the heinie sites that are NON STANDARD ODDBALL dovetail groove wider than any other pistol or site manufacturer currently offers. At this time,you CANNOT get any adjustable site that will fit it,nor can you make 1 fit as the dovetail slot is wider than all others. And to top it all off,taurus customer support got smart with me on the phone! They actually don't care!!!!!!!!! So I'll NEVER buy another taurus product,or reccomend them to anybody ever again. Even IF it's excellent in all other areas. I got my very first hint when ordering extended slide stop,upon trying it in gun,I had to dremel it slightly in order for this "drop-in" part to work.