Kel-Tec announced the temporary suspension of PMR-30 production due to potential keyholing problems with the current barrels. The PMR-30 has been shipping with 1:16 twist barrels, which appear to not stabilize all .22 WMR bullets. Kel-Tec is experimenting with 1:12 and 1:9 twist barrels to see what twist ratio works the best.
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