Complex sentence: The H&K USP or the Sig Arms P229 were stated to be going to become the new standard sidearm in the next 2 years; this is unlikely seen the new contract for 450' 000 M9 pistols announced by Beretta at the 2009 SHOT Show.
Split into simpler sentences: The H&K USP or the Sig Arms P229 were stated to become the new standard sidearm in the next 2 years. However, this is now unlikely as a new contract for 450,000 M9 pistols was announced by Beretta at the 2009 SHOT Show.