Nordic Components MXT Magazine Extension Kit +4 For 12GA Shotguns - MXT-TBS-12-4K
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Nordic Components MXT Magazine Extension Kit +4 For 12GA Shotguns - MXT-TBS-12-4K, Used in conjunction with the 12 Gauge extension tube nut, this tube kit will add 4 rounds to your existing magazine capacity.
Features:
Extension tube
Tube cap
Full length spring
Anodized 6061 aluminum