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Sig Sauer 516 upper receivers for $540

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I'm not the biggest fan of Optics Planet but they have complete uppers for $539.99.


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The lord has smiled upon me this day. Thank You whoever from Sig dropped me an FA carrier.


View attachment 446150 View attachment 446148
Can you guys educate me on the full auto vs semi bolt Carriers please. Maybe throw in some DI AR knowledge too. Thanks in Advance.

ETA...
Is it simply more mass around the rear of the cylinder of the BCG?
 

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Thread above sums it up nicely, has pictures too. Long and short, FA BCG will work without issue on a full auto lower, like a M16.
 

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Sig P220, P226, P227, P228, P365XL, P365XL, M400 TREAD, 716i TREAD, 516 G2 Patrol, MPX K
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Thread above sums it up nicely, has pictures too. Long and short, FA BCG will work without issue on a full auto lower, like a M16.
Interesting…but academic for most of us. I can’t ever see paying the price for a FA sear (with the appropriate permission slips from BATFE), so the fact that a BCG works in full auto wouldn’t mean anything to me…unless I could sell it and make some money! 😀
 

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I was looking at a couple sites that sell registered lowers. I have more things I can do with that kind of money..
If I have a need to go run a full auto, select fire weapon, I will go to a range, or ask a friend.
 

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Sig P220, P226, P227, P228, P365XL, P365XL, M400 TREAD, 716i TREAD, 516 G2 Patrol, MPX K
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Introducing my Sig 516G2 Patrol SBR. It's a 10.5" 516G2 upper with an M400 TREAD lower (identical to the 516 lower). I replaced the handguard with the Midwest Industries 516 and added the Romeo MSR and a Magpul AFG. The upper didn't come with sights, so I added Troy H&K style sights which, except for the Try markings, look pretty darn close to the G2 Patrol sights.

I submitted my Form 1 on 3/31 and got the stamp back today. Not too shabby!!

Air gun Trigger Gun barrel Machine gun Gun accessory


Air gun Black Trigger Machine gun Line
 

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Sig P220, P226, P227, P228, P365XL, P365XL, M400 TREAD, 716i TREAD, 516 G2 Patrol, MPX K
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I got the 516 G2 SBR to the range today (now that it’s legal!). After a bit of sighting in, the thing was a tack driver!! (For simplicity, I zero it at 15 yds - HD distance - and just use hold over for long range). Once it was dialed in, it just made big holes in the bullseye!!

Font Circle Pattern Diagram Drawing
 

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I got the 516 G2 SBR to the range today (now that it’s legal!). After a bit of sighting in, the thing was a tack driver!! (For simplicity, I zero it at 15 yds - HD distance - and just use hold over for long range). Once it was dialed in, it just made big holes in the bullseye!!

View attachment 451660
Looking good! How did it do at like 50 or 100 yards? Did you have a chance to try it or maybe you where in an indoor range? Did you suppress it?
 

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Sig P220, P226, P227, P228, P365XL, P365XL, M400 TREAD, 716i TREAD, 516 G2 Patrol, MPX K
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Looking good! How did it do at like 50 or 100 yards? Did you have a chance to try it or maybe you where in an indoor range? Did you suppress it?
I was at my indoor range -- it only goes out to 25 yds. My backyard range is only good for about 35 yds, so trying it out to 50-100 yds is problematic.

I have a Sig MODX-45 "in jail" (been there since August) but nothing for 5.56 yet.
 
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