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1/25/2018 7:38:29 AM
Posted: 1/2/2002 9:13:05 PM EST
What's the difference between a "1913 Picatinny rail" and a "Weaver base"? Is there even a difference? Dazed and confused in Phoenix...
Link Posted: 1/2/2002 9:21:27 PM EST
Mil. 1913 is a specific blueprinted size - weaver rails can vary in dimension from one maker to another.
Link Posted: 1/2/2002 9:31:30 PM EST
Do all ar15 flattops have the milspec 1913?
Link Posted: 1/3/2002 12:41:43 AM EST
I don't think so. ARMS specifically says that they guarantee their #45 on the ABC (Armalite, Bushmaster, & Colt) flat top uppers, but not on others, which leads one to belive they're not all milspec.
Link Posted: 1/3/2002 5:06:15 AM EST
In another thread someone reported problems with a Rock River upper (as I recall) rail being not spec.
Link Posted: 1/3/2002 5:11:00 AM EST

Originally Posted By PhoenixPete:
Do all ar15 flattops have the milspec 1913?



I think Rock River had some problems with their rails.

IIRC OLY made flattops in either Weaver or Picatinny for a while, all new uppers are Picatinny. Their FIRSH handguards are Picatinny but the first run was Weaver type rails.
Link Posted: 1/3/2002 6:48:38 AM EST

Originally Posted By PhoenixPete:
What's the difference between a "1913 Picatinny rail" and a "Weaver base"? Is there even a difference? Dazed and confused in Phoenix...


Damn, I was looking for the "Very Stupid Question Post."
Must be in the wrong place.
Link Posted: 1/3/2002 1:31:32 PM EST
Link Posted: 1/3/2002 1:41:52 PM EST
It's amazing what you can learn on here.
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