For Earlier Savage Long action 110 Series Stagger feed Rifles, Use this DBM System(Includes Flat top Receiver Models as well). It allows use of AI 338 Lapua C.I.P. magazines. 338 Lapua C.I.P, mags allow longer OAL out to 3.750" for Longer rounds. 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.