diablodawg Posted June 7, 2013 Share Posted June 7, 2013 I'm putting together my new HM rifle (AR10) and mistakenly bought a .936 front sight base to use with the JP front sight, but my barrel is .800 in that location. Will a .875 work? Can I shim down that much? Also, anyone know of a clamp on front sight base like the JP one, but is shorter and with fewer rail sections? I just need to fit the JP sight on and its gonna have to sit underneath my handguard as is (18.5" barrel and 15.5" Lancer HG.) Thanks! Link to comment Share on other sites More sharing options...
1ltrng3bn Posted June 9, 2013 Share Posted June 9, 2013 if your barrel is .800 where gas block is return what you purchased and ask for a .750 gasblock, then have it reamed..800 sounds really odd.. who is manufacture?.. Link to comment Share on other sites More sharing options...
diablodawg Posted June 10, 2013 Author Share Posted June 10, 2013 Criterion. Link to comment Share on other sites More sharing options...
1ltrng3bn Posted June 16, 2013 Share Posted June 16, 2013 have you checked with fulton armory? they market criterion barrels, they should have gasblocks to fit it Link to comment Share on other sites More sharing options...
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