M2 Extension for MAC 2 12ga +6 rounds

SDS Imports 5 Round 12 Gauge MFPA Magazine, Black - MFPA5RDM

Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension - BLK

Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension - RED

Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension - ALUM

Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension - BLUE

Tyrant Designs S&W M&P Shield +2 Aluminum Magazine Extension - GRY

BENELLI 4 Shot Magazine Extension Kit for M1/M2 Shotguns