LACHASSIS The Grey Birch Solutions LaChassis is literally the cornerstone of Grey Birch, the company, the solid ground on which we will build our house. The end goal in building the LaChassis has always been a lightweight, modular, adjustable, and secure base to firmly house the barreled action in place from two locations. The LaChassis is a modular chassis system built around the rimfire platform, with models to fit the Tikka T1x. The LaChassis is packed with features to enhance the shooting experience with configurations ranging from short range race gun to long range precision. Magwell Cutout for Easy Magazine Changes AR Grip Compatible Mounting Point Mfg: Grey Birch Solutions