What is the minimum Length of Pull on the TAC21 Savage Chassis with a Magpul PRS? Maarten Van Ruitenburg April 19, 2018 21:56 Follow The minimum Length of Pull (LOP) on the TAC21 Savage Chassis with a Magpul PRS is 14.5". Our Skeleton Rifle Stock however comes in 2 different lengths, allowing you to get your Length of Pull down to 14", or our Skeleton Carbine stock as low as 12". Have more questions? Submit a request 0 Comments Please sign in to leave a comment.