What do I need to make a Ultimatum Deadline work in an MDT chassis? Derek Schween April 12, 2022 16:17 Follow The Ultimatum Deadline is based on a Remington 700 footprint. All current production for the Remington 700 inlet will work for the Deadline (except the TAC21). However, you will need the shortened mag latch kit available here. Have more questions? Submit a request 1 Comments Date Votes 0 PRS December 28, 2019 07:16 good info thanks Please sign in to leave a comment.