Remington Interstate Arms Adjustable Length of Pull Stock Spacer Kit - 19481R. The Remington adjustable Length of Pull kit allows you to Vary the length of Pull using 3 easy to use spacers. Allows you to change the L.O.P. in 1/4" increments using the 2 1/4" spacers and the 3rd 1/2" spacer. Included screws to match each size.