There were 5 variants: 721A, AC, B, D, F. I don't know if the original trigger was adjustable, but I think you can replace the trigger with an adjustable trigger for a model 700. For ammo, try whatever the gun shop has on the shelf. The 721 & 722 models were known for being extremely accurate guns. Nov 08, 2008 · Synthetic Stock for Remington 721 I've read a lot of different posts here and elsewhere about whether or not a Remington 700 synthetic stock will fit a model 721 Remington .270. There are a lot of different thoughts on it and because most seem to think that the stock would fit I bought one from Sportsman's Guide.
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