KWA 1911 MK I-IV Series 21rd GBB Airsoft Magazine (197-01302)

Glock Magazine: Model 21/21SF/41/30: 45 Auto/ACP 13rd Capacity - MF21013

Auto Ordnance Magazine 1911 Blue 7rd Magazine G21M

Auto-Ordnance 7rds .45 ACP Magazine, Stainless - G21S

Sig Sauer M17 ProForce 6mm 21rd BB Magazine w/Green Gas Housing AMPF-M17GG

Sig Sauer 1911 Air We The People 4.5mm Cal 17rd BB Magazine AMPC-BB-WTP

Glock G17 Gen4 GBB 6mm 22rds, Black

Umarex Glock 17 Gen 4 .177 BB 18 Round Magazine, Black - 2255203