Tapco 20 Rd AK 47 Magazine 7.62 x 39mm (Hi Cap States) DPMS 308 Steel Magazine 10 round Magpul PMAG 30 Rd AR-15 5.56/.223 Maglevel Magazines
Spikes Tactical Complete Lower Receiver w/ T2Buffer-Spider Logo Magpul  10/30  PMAG Magazine  .223/5.56mm Colt M4 Carbine .22LR, 16", 10 Round Mag