I think ATRS can set you up with an AICS .
I recently asked atrs about tikka stocks. They can get bell and carlson and mcmillian.
Gunworxs in Oz has few drop in choices also.
I ordered a stock from gunworxz back in Jan. Nigel phoned me last Wednesday
promising to ship it within the next 2 weeks. ( only after I email and threatened
to cancel my order).
I am going to try tikkapreformance.com if gunworxz has not sent me a shipping notice buy month end.
I did speak to tikkaperformance on the phone and they promised a 2 / 6 week supply date or turn around.
But so did gunworxz,
Another poster pm'd me that you can order directly from GRS in Norway. Had the stock in about a month at a lower cost than purchasing it through tikkaperformance.