Winchester 70 Post 64 Short Action DBM. This allows use of AICS mags in your Winchester 70 Short Action Rifle. Install is required, and we can provide inletting and install services as well. Installs are free at CDiPrecision, so click Install option and send your rifle in for install. Easy and fast. 3 week turnaround or faster. US Addresses only. Mags Must be purchased Separately. IF you have an FN-SPR Rifle, go back and select the FN-SPR DBM we offer in our store.