RBC Capital analyst Matthew McConnell recommends buying TransDigm's stock on weakness. The analyst said shares are off 4% unsubstantiated report from CNBC that Senator Elizabeth Warren sent a letter to the Department of Defense on May 21 asking it to investigate TransDigm's pricing of defense products where it is the sole source supplier. McConnel suspected that TransDigm's defense business could be audited ever since ever since Congressman Ro Khanna's letter to the Inspector General in March and said the Warren letter does not meaningfully change the story. The analyst sees no discernible impact on its sales or profitability and reiterates his $316 price target and Outperform rating.