I recently purchased a M1991A1 Officers ACP Compact Series 80. It does not appear to have been shot all that much. All internals are as new with no signs of wear or damage. Now to my question. The previous owner installed a Wilson Combat reverse plug, single spring and full length guide rod. Any comments on the Wilson Combat setup. Is it reliable? If I decided to change it out do you have recommendations for replacement parts. Is it possible to change to a conventional 1911 plug, spring and short guide rod. By the way the barrel is 3 1/2 in in length and has the OEM barrel bushing. Thanks for any advise.