I have put together 16 rimfire 10/22 variants in the last few years. Im going to list in order the components that have repeatedly shown themselves to be superior. Barrels are Kidd, McGowen,Volquartsen and then the junk! Although Ive never had the opportunity to get a Lilja which id try in a heartbeart,with my centerfire experience with them. Triggers is an easy one! KIDD PERIOD. Timney are great but not quite a KIDD and the VQ is anothergreat option. Heard great reviews about various trigger upgrades but wondere if any of the reviewers used a KIDD. Bolts are a no brainer, Volquartsen comp bolt hands down. Best design with a bolt like a centerfire and eliminating another friction point. Just SUPERIOR PERIORD. AS far as receivers the best are made from a solid billet of aluminum or stainless steel. Big difference in the aluminum is the grade used. 7075 T6 is mill spec and thats what U want or SS like the VQ which is awesome but over 3 times the price. If you buy all the proper components the gun will be well over $2400 when completed depending on the stock. Done properly theyll give a Vudoo a run for the money! I know as I own both.