Well I received my "LDC's" today from TKO, and they fit perfectly, I was also worried that they wouldn't get through Customs, but I checked around on the Canadian Forum site, and found lots of people that have imported them.
The wording on the Instructions that came w/ my order said "TKO MuzzleBrakes", not LDC's, and if you look on the CAF forum you will see countless threads on "MuzzleBrakes", some even mentioning TKO by name, or the guy's I usually deal with like "Larry" from "Airgun Artisans", and when I placed my order w/ Mike Tiehen fron "TKO Design" He said he's never had any problems selling/shipping any of his MuzzleBrakes to Canada, So, who's right, and who's wrong?,When I received my order there was a little sticker on the package that said "Opened, and Inspected by Canada Customs(CBSA)", Anyway's, I'm extremely happy with my "BRAKES", and would recommend Mike & his services/products to anyone.Just my opinion, but judgeing from the build its almost all "Delrin", and Carbon Fiber tape, I seriously doubt that they could go on anything that produces more than 50ft/lbs w/out self-destructing, If I remember correctly even a .22 lr round pproduces in excess of 100 ft/lbs or so, So what else could it go on, You'd probably have better luck sticking a potato over your muzzle as opposed to one of these "BRAKEs". LOL, Cheer's, Andy.