I bought this rifle last year and so far very pleased with it. I have very easily shot .5 inch groups or less with this rifle at 100 yds with 175 smk. But I dont like the stock and want a change. I have not been able to find anything out on it really like twist rate or whether or not I have to buy LA things for it (stock, scope rails, etc.) or SA. it is an older model rifle and also has is a hidden mag. Any help that any one can give me will be GREATLY appreciated. Thanks.