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Discussion Starter · #1 ·
I have a DPMS Upper with Standard Barrel Size (not heavy) I currently have the standard A2 Front Sight Post and want to get a flat top gas block.

Which Size do i need?
.750 <-------Is what im thinking....
.880
.938
 
G

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Discussion Starter · #2 ·
more than likely the .750 ;)
hold a tape measure under the barrel at the FSB and see if it looks close to that.
 
G

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Discussion Starter · #3 ·
I have a DPMS Upper with Standard Barrel Size (not heavy) I currently have the standard A2 Front Sight Post and want to get a flat top gas block.

Which Size do i need?
.750 <-------Is what im thinking....
.880
.938

.750 <-------standard
.880 <-------heavy
.938 <-------Bull

now some custom barels don't fit any of these categories to a tee, but your local gunsmith or one of the guys here who is one should be able to point you in the right direction.

BTW, I'm getting my new Dpms in Jan
 
G

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Discussion Starter · #4 ·
i would say you need the .750
if it was anything else im sure they would have sold it as heavy barrel or something like that
 
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