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Discussion Starter #1
can anyone tell me if the vector mp5/40 barrels were fluted ? specifically the ones that were sold in the "kits "
or was there any production of non-fluted barrels at all ?
any problems related with them or info that can be shared ?

still geekin on this .40 build and collecting parts and some 2nd hand knowledge .

thanks
 

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H&K Certified Armorer
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I have had to rebarrel several guns that had the "kit" barrels and they were all fluted although the flutes were shallow and thus needed new barrels. Can't speak for ALL the barrels as many have solved cycling problems with new bolt groups.
 

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Grand Chazzar
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I have had to rebarrel several guns that had the "kit" barrels and they were all fluted although the flutes were shallow and thus needed new barrels. Can't speak for ALL the barrels as many have solved cycling problems with new bolt groups.
What is proper depth for 40 cal barrel flutes ?
 

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H&K Certified Armorer
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What is proper depth for 40 cal barrel flutes ?
Exact measurement I do not know, but when compared side-by-side to a factory barrel, you can seen a noticeable difference in how deep the flutes go down in to the free-bore.
 
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