Black River MFR BRDMFDE01 X12 20rd 12 Gauge Typhoon Defense X12/F12 Black/Flat Dark Earth Polymer $148.22
Warne MEG422BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for Glock 42 Magazines (Adds 2rds) $34.99
Warne MESW54BLK Magazine Extension made of 6061-T6 Aluminum with Hardcoat Anodized Black Finish for S&W M&P Magazines (Adds 5rds 9mm Luger, 4rds 40 S&W) $39.99