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Discussion Starter · #1 ·
I'm considering buying an ACR and I'm in the research stage of buying one. Then a strange question popped into my head.

How stable is that trunnion?
Has anybody heard of it coming loose?
Is it held in by 4 screws?

And also, will my barrel change POI(assuming it's torqued correctly) if it gets bumped around a little? When I say "bumped around" I mean the occasional hard bump on a shooting bench, bump a tree stump while hunting, or maybe a fall from a shooting bench.

I'm not particularly worried about it, but I am curious.
Any information is greatly appreciated. :)
 

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Most guys here report very little shifts in point of impact after countless times of removing the barrel. That is only held on with a collar and handle held in place by a button and its torque is basically hand tight and good to go. You'll have more replies here soon from the rest of the forum. Welcome. You joined a great place to learn. Its a great solid rifle. Sorry I could only answer part of your question to the best of my understanding.
 

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I can tell you that I keep mine in my trunk. I work in the county and I have to ride (sometimes very quickly) on shitty bumpy roads. The rifle just rides in a sturdy nylon case. I haven't noticed any POI shift between range days.
 

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I haven't had my ACR all that long, but so far the barrel is dead nuts after a few removals/re-installs.
 

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I haven't pulled the trunnion out, but I have thought about it. It looks like it has two pins and one screw. not sure about the screw two pins for sure one top one bottom.
 

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i will have some pics up soon ill be stripping out the upper for a new finish
dam,he should be on BMs payroll,they might learn somrthing.
 
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