Kibler's Longrifles Knowledge Base

Adjusting pin tension on a slotted underlug

Jim explained that if pin tension on a slotted underlug is too loose, you can tap down the middle of the slot with a hammer and file the other side closer to the barrel to move the slot and adjust the fit.

Category: Building & FinishingTopics: Barrel, Tool, Jim Kibler, BuildingLast verified: 2026-07-25Also called: barrel, tube, building, assembly, putting together, finishing

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