Savage Model 10Series Stagger feed Short Action DBM. This is for older Savage rifles, that have bolt screw spacing dimensions of 4.275". Uses AICS 223 or 308 Mags. 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.