Vista Outdoor (NYSE:VSTO) rose 3.3% as it again delayed a shareholder vote on the sale of its ammunition unit to Czechoslovak Group as is reviews an increased takeover offer from MNC Capital.

Vista (VSTO) delayed the vote to Sept. 27 from Sept. 13, according to a statement on Tuesday. Vista made any decision in regard to MNC's increased bid.

MNC on Saturday increased an all-cash buyout offer for Vista Outdoor (VSTO) to $43 per share from $42 per share. The parent of Federal Ammunition and Remington Ammunition had previously rejected MNC's buyout offer for $42 per share, in favor of an increased bid for its ammunition unit, Kinetic Group, from CSG.

The bidding war has been going on since the start of the year, with Vista (VSTO) rejecting multiple offers from MNC over CSG's bids. However, the Prague-based defense firm's offer has raised national security concerns despite receiving regulatory approval.

Vista (VSTO) launched a strategic review in July, and postponed its special meeting where shareholders were expected to vote on the CSG deal to September 13 from July 30, the latest in a string of postponements.