Blackdog AR-15 .22 50 Round Drum Magazine

All Black Dog drums are plug and play for semi-auto use. We do not guarantee that the drum will work in full-auto setups. However, many customers report that with a little fine tuning they can get the drum to work in full-auto. Recommended compatible conversion units : * Ciener/Atchisson * Model 1 Sales * Spikes Tactical * Tactical Solutions * Target Master * Kel-Tec PLR22 * Sig Sauer 522