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1/25/2018 7:38:29 AM
Posted: 12/26/2005 5:30:36 PM EST
Will I run into any problems mounting a scope with a 50mm objective lense? It will be on a 20" HBAR flattop AR15.
I bought a scope mount block that the salesman said would allow standard scope rings to be used, but I didn't mention using a 50mm.
Should I stick to a 40mm scope?
Link Posted: 12/27/2005 5:01:28 AM EST
[Last Edit: 12/27/2005 5:02:06 AM EST by Southern_Raider]
The height at which scopes are mounted on the AR15 is dominated by the sight line, so choosing a 40mm scope won't necessarily make it rest any lower as is the case with most other guns. I would, however, consider a cantilevered mount, as most scopes have a bit too much eye relief for the AR15 platform. Getting them a bit more forward helps tremendously.

I can highly recommend the Larue SPR mounts, which put the scope into comfortable eye relief range and can accomodate a 50mm bell with flip covers. Here's a pic on my M1A using a 50mm objective. The mount is reversed from the way you'll be using it.
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