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MI, USA
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Posted: 5/21/2024 4:49:23 PM EDT
[Last Edit: PerfectDark2023]
Hi, I'm a new member. I recently got an A1 hybrid upper fron Sanders and it looks mostly good, except the front sight is canted quite a few degrees to the right. I contacted them about it and they assured me that they check each one before sending them out, but asked for pictures as well. So I sent them the same ones I'll post here. I'm not 100% certain if I'm just being overly worried about nothing. Also, advice on how to tix it would be appreciated, because they haven't responded after receiving my pics. That was at least few days ago.
Imgur gallery of the upper in question on a lower Is this much ado about a relatively minor issue? Am I being over dramatic in saying that I'm somewhat disappointed with the sights being offset like this? Is this an easy fix? |
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IL, USA
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Posted: 5/21/2024 4:55:00 PM EDT
[#1]
I got a PSA upper that was way off. Yours looks like it will zero and doubt it will be an issue. I sent my PSA back and they fixed it. I’d shoot it and see where it prints.
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Posted: 5/21/2024 4:59:38 PM EDT
[Last Edit: HighpowerRifleBrony]
[#2]
Doesn't bode well, but how does it boresight*/zero?
*with the Mk1 eyeball, not that laser crap. |
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MN, USA
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Posted: 5/21/2024 5:47:01 PM EDT
[#3]
The FSB may very well be true to the barrel, and the canting due to the assembly method. If a barrel nut is tightened while the barrel is held by a reaction rod, or barrel clamp, there can be a tendency for the upper receiver to rotate slightly to the left. When the barrel nut is tightened while the upper receiver is held by a clamshell, or similar device, there is a tendency for the barrel and FSB to move to the left. In either case it is due to the index pin compressing against the side of the slot, and if overly torqued can actually indent the slot. I'd be willing to bet if you broke that nut loose and clamped the receiver and torqued it back down the FSB would move to the left, perhaps enough to square it up.
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Posted: 5/21/2024 6:13:35 PM EDT
[#4]
Quote HistoryOriginally Posted By VASCAR2: I got a PSA upper that was way off. Yours looks like it will zero and doubt it will be an issue. I sent my PSA back and they fixed it. I’d shoot it and see where it prints. This right here. It may very well be canted but does not look that bad in your photos. Go shoot it and see how it does. |
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Posted: 5/21/2024 6:47:15 PM EDT
[#5]
Not seeing a problem.
How does it shoot? |
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NY, USA
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Posted: 5/22/2024 8:30:59 AM EDT
[#6]
To my very untrained eye that looks like an airsoft or air gun. The safety selector looks strange to me.
My apologies in advance if I am just uniformed. |
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MI, USA
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Posted: 5/22/2024 11:03:31 AM EDT
[#7]
Quote HistoryOriginally Posted By s4s4u: The FSB may very well be true to the barrel, and the canting due to the assembly method. If a barrel nut is tightened while the barrel is held by a reaction rod, or barrel clamp, there can be a tendency for the upper receiver to rotate slightly to the left. When the barrel nut is tightened while the upper receiver is held by a clamshell, or similar device, there is a tendency for the barrel and FSB to move to the left. In either case it is due to the index pin compressing against the side of the slot, and if overly torqued can actually indent the slot. I'd be willing to bet if you broke that nut loose and clamped the receiver and torqued it back down the FSB would move to the left, perhaps enough to square it up. Thank you for elaborating on how to (probably) fix this. I guess I'm just being a bit OCD about alignment. For everyone asking how it shoots, I honestly don't know. I haven't tried firing it, yet. Lastly, for the guy who said the selector looks unfamiliar, or like an airgun; the lower has a Franklin Armory BFS 3 (binary) trigger and selector. |
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WA, USA
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Posted: 5/22/2024 11:13:25 PM EDT
[Last Edit: 556Cliff]
[#8]
Definitely shoot it first and see how your windage adjustments end up. If they are way off center then it's time to either send it back in to have it corrected or do as s4s4u recommended. But, if it's way off on windage to where it's nearly bottomed out on one side it's going to require sending it back, because that wouldn't be correctable through the barreling method alone.
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Posted: 5/23/2024 12:05:59 AM EDT
[#9]
Shoot first.
Complain second. Unless you only planned to just look at it, and never shoot it. |
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Posted: 5/23/2024 12:22:31 AM EDT
[#10]
Can you zero it?
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VA, USA
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Posted: 5/23/2024 3:25:47 PM EDT
[#11]
Did you take the handguards off to see I they are what’s making it look a bit crooked?
As others said it will probably zero just fine. |
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Posted: 5/24/2024 8:58:40 PM EDT
[#12]
I'll chime in with the others who recommend shoot it and see, but it's too bad the maker ghosted on you.
Maybe they'll be more responsive after the long weekend. If you shoot it first you'll have more information to give them. |
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Posted: 5/24/2024 9:32:04 PM EDT
[#13]
You can rig a pointer stick and see where it aligns
 Colt 6933 Front Sight Block "cant" measurement https://www.ar15.com/forums/AR-15/AR-15-Front-Sight-Post-cant-Gauge-How-to-build-your-own-/4-767093/ |
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MI, USA
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Posted: 5/31/2024 4:34:46 AM EDT
[Last Edit: PerfectDark2023]
[#14]
You can rig a pointer stick and see where it aligns Oh, that's actually a great/quick at-home test I can do with an alignment rod. Thanks. I guess I'll try that first, then possibly try to zero it traditionally. I may post back depending on how either goes. If not, just assume no news is probably good news, though. |
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WA, USA
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Posted: 5/31/2024 9:11:18 AM EDT
[Last Edit: 556Cliff]
[#15]
Quote HistoryOriginally Posted By PerfectDark2023: Oh, that's actually a great/quick at-home test I can do with an alignment rod. Thanks. I guess I'll try that first, then possibly try to zero it traditionally. I may post back depending on how either goes. If not, just assume no news is probably good news, though. Quote HistoryOriginally Posted By PerfectDark2023: You can rig a pointer stick and see where it aligns Oh, that's actually a great/quick at-home test I can do with an alignment rod. Thanks. I guess I'll try that first, then possibly try to zero it traditionally. I may post back depending on how either goes. If not, just assume no news is probably good news, though. Keep in mind that you can indeed have perfect FSB alignment according to the alignment rod and still end up with windage that's far from centered. You can also have a canted FSB according to the alignment rod and have centered windage... It's funny the way it is. 
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