XCR is the "Extreme Conditions Rifle". I think there's some kind of different coating or finish on it to keep it from rusting.
edit to add...(from Remington's website) I think your LTR is chrome moly, not stainless. Don't see the LTR on the website anymore.
The most durable hunting rifle ever built. Featuring our TriNyte® Corrosion Control System, the introduction of the Model 700 XCR in 2005 stretched the previous durability limits of stainless steel. And for 2010, the Model 700 XCR II is redefining its looks as well. The stainless steel barrel and receiver are now coated with matte black TriNyte for a more classic look with less glare for superior stealth. It's every bit as impervious to extreme conditions, with the same proven track record in accelerated saltwater testing that opened the world's eyes to the power of our patented technology. Simply put, TriNyte delivers scratch and corrosion resistance dramatically superior to standard stainless steel as well any protective coating by any other manufacturer.
The Model 700 XCR II is also optimized for sure handling in adverse climates. Its feature-laden olive drab green synthetic stock is a technological marvel that looks and feels the part with patented Hogue® rubber overmolding featured at the grip and fore-end areas. These revolutionary enhancements give you a positive grip in the slickest environments. And shots are made infinitely more comfortable with our SuperCell™ recoil pad - the most effective on the market today. Our X-Mark Pro® Trigger System gives you a level of crispness and shot control once only available through high-dollar customization. Choose from a wide range of hard-hitting big-game cartridges, all delivered with the track-driving accuracy only a legendary Model 700 barreled action could produce.
