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Page AR-15 » AR Discussions
AR Sponsor: bravocompany
Archived [ARCHIVED THREAD] - Aero Lower loose at pivot pin
Posted: 5/28/2020 11:11:41 PM EDT
I have an Aero Precision lower I used for a pistol build, and with two different uppers it has side to side wiggle at the pivot pin.
One upper is a DD Mk18, and the other a BCM, but both have the same loose fitment.  Is there any way to remedy this?
It doesn't really seem to affect anything, but if there's an easy way to fix it I'd like to give it a try?

Link Posted: 5/28/2020 11:16:21 PM EDT
[#1]
Yes there is a slight wobbling to the upper in terms of fitment.

Link Posted: 5/28/2020 11:16:45 PM EDT
[#2]
Scroll down to the pivot shims...

https://triggershims.com/ar_15_shims.php#S23

They eliminate the wiggle.

Link Posted: 5/29/2020 12:07:22 AM EDT
[#3]
So do those shims eliminate side to side movement?  The pivot pin
is a Strike Industries and I believe the diameter to be correct.  The only
wiggle is side to side.

Link Posted: 5/29/2020 2:13:34 AM EDT
[#4]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
Scroll down to the pivot shims...

https://triggershims.com/ar_15_shims.php#S23

They eliminate the wiggle.
View Quote


Thanks, they have AR-10 shims also

Link Posted: 5/29/2020 11:30:01 AM EDT
[#5]
Discussion ForumsJump to Quoted PostQuote History
Quoted:
So do those shims eliminate side to side movement?  The pivot pin
is a Strike Industries and I believe the diameter to be correct.  The only
wiggle is side to side.
View Quote



Yep, I ordered a set with a few different sizes...just install the largest that will fit and the wiggle/slop/play is gone.

Archived [ARCHIVED THREAD] - Aero Lower loose at pivot pin
Page AR-15 » AR Discussions
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