Assertion: shotgun's magazine | /r/CapableOf | compare to a 30-round 9×19mm magazine
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Source sentences:
text: The weapon allows a conventional 20-round, 30-round, or 40-round box magazine to be fitted within the pistol grip (the 20-round magazine being comparable in size to a 15-round 9×19mm magazine, while the 40-round magazine compares to a 30-round 9×19mm magazine).