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SIG 551 Aftermarket Trigger Up-Close

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SIG 550 Aftermarket Trigger
The two matched, replacement parts: Hammer & Sear.

By viewer request, here are up close images of the SIG 551 aftermarket trigger. No, it’s not a drop-in cartridge like some of the modern AR designs. 

But is really only consists of 2 parts: sear & hammer. The trick is putting the springs back in after taking the OEM out. I suggest you take photos and look at some of our posts on the subject for best practices. 

We don’t include a detailed install, but we do cover the stuff that may not seem obvious to the weekend warrior. 

 

 

 

Sincerely, 

Marky

www.John1911.com

“Shooting Guns & Having Fun”

Marky
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