A GANGSTER who planned an armed robbery had his 17-year sentence reduced by two years at the Appeal Court yesterday. Chim Kong-pun, 27, was part of a gang of illegal immigrants who planned to use semi-automatic rifles and pistols they had smuggled into the territory to rob a shop in Central. They expected to haul in $10 million from the robbery. The three gang members were told they would each get $2 million, with the rest going to an unnamed mastermind. But on April 11 last year, police raided the Sky Dragon - a Nathan Road guest house - and uncovered the stash of weapons and ammunition hidden in a false ceiling. Chim was jailed for 17 years after being found guilty on three charges, including possessing arms and ammunition with conspiracy to rob. All three sentences ran concurrently. On February 14, Chim and two other men were sentenced at the District Court by Judge Beeson. Chim had pleaded not guilty. Poon Hoi, 24, who admitted the arms charge, was given 10 years. But the Court of Appeal did not lower his sentence when it heard his appeal along with Chim's yesterday.