AR vs. Other Assault Rifles. Why the hate?

[MountainRaven]

Except if you have a good optic, you can just adjust clicks to rezero (ie: pre-zero both barrels. When you swap barrels, adjust to the pre-determined zero). Or you can use a good optic mount like a LaRue and simply swap optics.

Not a lot faster than an extra upper, but definitely lighter.

[Safetyhit]

Shift would be minimal. Who really runs around with a whole extra upper?

It's done by some overseas often, but not practical for most no doubt.

[SteyrAUG]

Zero shift would be more than minimal. Each barrel would have to be rezerod/

In most cases if you are going from a 16" to something like the 24" Hbar, you are also changing optics.

[Magic_Salad0892]

In most cases if you are going from a 16" to something like the 24" Hbar, you are also changing optics.

It would be more practical to just pop two pins and flip your upper out. (Not carry it on your person, nobody really does that, but if you had an extra upper in a car or something, it'd be feasable. From a military standpoint you can substitute "car" for "helo/humvee/outpost/etc.")

[signkutter]

Zero shift would be more than minimal. Each barrel would have to be rezerod/

I will have to take your word for it. I have no experience in switching barrel legnths. I do know that I can take out my 16 inch barrel and remount it the impact point does not change... all the variables involved though I could see a completely different barrel changing POI very easily.

[sinlessorrow]

I will have to take your word for it. I have no experience in switching barrel legnths. I do know that I can take out my 16 inch barrel and remount it the impact point does not change... all the variables involved though I could see a completely different barrel changing POI very easily.

That is a bit different POI should barely shift if any at all if you remove and remount the same barrel as the optic is zero'd to that barrel/upper combo, but when going to a new barrel/upper combo it will require you to re zero the optic.

[Failure2Stop]

It has been my experience that removing a barrel and reinstalling it will result in a shift of zero. Sometimes that shift will be within 1 MOA, sometimes it will be much greater, and it is not always consistent. This applies to many different platforms.

It would be up to the user as to what "minimal" or "acceptable" would be, but given my example of going from a CQB gun to a precision gun, I would not accept more than a 1 MOA shift for the precision application. Add to that the zero shift incurred by removing and replacing an optic mount, and potential issues would be a bit more than I would accept with even the most consistent of these barrel change options.

On to the next part of the discussion:
Switching barrels & optics, or an entire upper receiver assembly mid-mission is silly. Possible, sure, but a lot more hassle than it's worth for most users. Rather, one could easily do the swap of the parts at home, or wherever the weapons/ammo storage point may be.

Typos brought to you via Tapatalk and autocorrect.

[Magic_Salad0892]

It has been my experience that removing a barrel and reinstalling it will result in a shift of zero. Sometimes that shift will be within 1 MOA, sometimes it will be much greater, and it is not always consistent. This applies to many different platforms.

It would be up to the user as to what "minimal" or "acceptable" would be, but given my example of going from a CQB gun to a precision gun, I would not accept more than a 1 MOA shift for the precision application. Add to that the zero shift incurred by removing and replacing an optic mount, and potential issues would be a bit more than I would accept with even the most consistent of these barrel change options.

On to the next part of the discussion:
Switching barrels & optics, or an entire upper receiver assembly mid-mission is silly. Possible, sure, but a lot more hassle than it's worth for most users. Rather, one could easily do the swap of the parts at home, or wherever the weapons/ammo storage point may be.

Typos brought to you via Tapatalk and autocorrect.

Kind of what I was getting at.

F2S, would I be right in saing that there would be zero shift stacking? As in for zero shift between optics, barrel, possibly ammo, and suppressor?

[Failure2Stop]

F2S, would I be right in saing that there would be zero shift stacking? As in for zero shift between optics, barrel, possibly ammo, and suppressor?

Yes. Not so much that there will be tolerance stacking but rather that there can be stacking. Would probably still be fine for sub-100 stuff with the better platforms, but nowhere near the surety of a complete upper with optics attached.

[Magic_Salad0892]

Yes. Not so much that there will be tolerance stacking but rather that there can be stacking. Would probably still be fine for sub-100 stuff with the better platforms, but nowhere near the surety of a complete upper with optics attached.

I understand. I'm gonna send you a PM real quick regarding tolerance stacking so I don't derail the thread.

ETA: Nevermind. My question answered itself when I was typing it.