Sako L579 Short Action Detachable Bottom metal. Works with 223 or 308 AI mags. This Bottom metal assembly allows the use of AICS magazines in your Sako L579 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.