Rails

[geezer]

I learned something.

I bought a Bushnell Incinerate red dot sight for my HiPoint .40 carbine. Description said that it would fit Picatinny rails. No problem, I thought.

It doesn't fit. Evidently picatinny rails are not standard. This scope is labeled AR optics. The cross bolt measured .195, MY picatinny rail slots are .155.

I have three other red dot sights (one's a Bushnell) and all fit the picatinny rails on the Hi Point. According to Bushnell (after a call) the AR picatinny is different.

Now this is probably no news to AR owners but I don't own one so I didn't know. 70 years in the shooting sports and learned something new. (to me)

I sent the sight back for a refund.

 

[russc2542]

Picatinny rail is a standard https://en.wikipedia.org/wiki/Picatinny_rail. there's no "AR pic rail" vs "other pic rail"

Now the height-over-bore of the rail is different on all guns but either it's a pic rail and meets the spec or it isn't. According to the link above, the slots in the rail oughta be .206"

 

[geezer]

You're right! Picatinny rails grooves are .206, Mil Std. 1913. What is on the Hi Point are Weaver rails, groove width is .180. Weaver specified sights will mount on picatinny rails but picatinny specified sights will NOT mount on Weaver rails. Both Hi Point and Bushnell advertising seems to be misleading. Haven,t checked further.