The best replacement for 1991 is 1911.

The best alternatives to 1991 are rated as following:
★★★★★  1911
★★★★  series 70
★★★  xse
★★  springfield mil spec
  remington r1
  colt 1911
  republic act 7160
  70 series
  1911 colt

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Speaking about 1991, one probably shouldn't forget about collapse of the soviet union.

Other search terms related to 1991 and their ratings are:
★★★★★ collapse of the soviet union
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1991
1911
series 70