Nope....the front sights are all just as thick. Now if your problem is that the carbine shoots high, just replace the front sight with a taller one or use some JB Weld to build it ups then carefully file it down.
OGCA Lifer, 03 Cruffler son of a 325th GIR Glider Rider
To improve accuracy of a carbine can be a trying thing. It depends on how tight a group your shooting now with your carbine. If your under 4 inches at 100 yards your doing pretty good. A really tight grouping carbine is down to an 1 1/2 at 100 yards with most at 2 inches. If you get it down to that it doesn't get any better. The carbine was not set up as an accuracy weapon. Just to shoot on inch of bad guy when needed and to be very dependable. Nut if your carbine has been through a rebuild then it most likely has the updates to help with accuracy. The type 3 recoil plate. The type 3 hand guard with the lug and a pot belly stock. Nothing else will help the accuracy of a carbine. People have tried to bed the action in the stock. They have tried to tighten the trigger housing to the receiver.(NOT RECOMENDED)and to file down the hammer, sear and trigger. (AGAIN NOT RECOMMENDED!! This can be dangerous if done.)
When you get as old as me, you don't need to be aiming farther than you can see anyway. My lawn extends some 50-yards out to the treeline on either side. That's the limit of my range and the carbine works wonderfully on undesirable forest creatures at that distance.