AR Positional POI Shift Test

[LRRPF52]

Here’s the shooting footage from the above targets

Skip to 7 minutes for the shooting

For the BCM/Geissele, the only thing I can think of for that insane deviation with the bipod prone shoot was contact with the gas block with maybe the bipod mount back-end hardware. Because it went right back to close POA=POI for the tripod-supported.

Excellent video to illustrate what we’re talking about with positional POI shift though.

 

[LRRPF52]

The rifle that has me the most curious is the Hk G28, because it uses a steel upper. Would be interesting to see if it holds more true than all the aluminum uppers.

 

[Veracity]

@Veracity you're mentioned in the SOLGW article on their new L89A handguard. Have you been able to test that + a broadsword upper for shift? I can't imagine it's much different than a traditional AR.

It's not much different. Right at .25 mil in my testing of 2 rifles. 1 is 18" and 1 is a 20". Both suppressed

 

[itsallbacon]

For the BCM/Geissele, the only thing I can think of for that insane deviation with the bipod prone shoot was contact with the gas block with maybe the bipod mount back-end hardware. Because it went right back to close POA=POI for the tripod-supported.

Excellent video to illustrate what we’re talking about with positional POI shift though.

I bet you’re right. I’m going to have to try it again.