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20 Round .300 Blackout Magazine for Subsonic Rounds This 20 round .300 Blackout specific magazine alleviates issues with stacking and feeding of 200+ grain subsonic rounds. The enlarged body allows...2 Options
.300 Blackout Polymer and Steel Hybrid Magazine Lancer's .300 Blackout specific L5AWM magazine features optimized internal geometry to feed a .30 caliber cartridge. The hardened steel feed lips wrap around...
These darkened polymer magazines for .300 Blackout let you see how many .30 caliber slugs you have remaining.
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