Re: Can a picatinny rail be added to a 1911?
You better be sure to check and make sure that they will work with the Colt Commander before hand. It has a shorter dust cover that the 5" full-sized 1911. Most of the aftermarket rail add-ons are for the full size. Besides that finding a holster to fit you gun could also present a problem as many of the aftermarket rails sit slightly lower than the guns coming from the factory with an integral rail.
I believe that you would save money in the long run by not having to pay for a gunsmith to work on the pistol and find a railed 1911 or look for the Kimber Pro or Springfield LW Champion Operator if you are looking for the shorter barrel.
Good Luck though
JMC