Contributed by Gnashty Nordic
First Poly 80 AR Build
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Set up is a harbor freight 10" drill press and 6" X/Y vise
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Time to drill out my trigger control and hammer pins as well as the hole for fire select
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So far so good
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Here we hit a problem that I will show later. When I drilled the two holes straight through for the trigger, it happened to fall on the edge of a weaker section where I'm assuming they did the mold injection process. This led to a thin spot that was shallow from the outside. This was not due to over milling, but I fixed it with some good ol fashioned Jarhead improvising and JB weld. I mixed some polymer dust and JB weld to fill the defect and then milled back to spec.
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Milling out the trigger pocket that will lead to discovery of said defect
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So yea, everything was going great. Then my last pass with the mill, I went to raise the mill bit and it started to cut into right side chewing on the jig. I acted quick, lowered the mill bit and shut off press to remove the lower and inspect for damage. Luckily it was only a minor blemish. It will not affect functionality, but it sure did piss me off! Now I have to order another lower and start again! Lol. I will continue to finish this build until a new lower arrives!
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Stock AR-15/M4 set up. Nothing fancy. Lower had tan paint from a test color I wanted to check out. Didn't like it. Wiped it all down to start a new.
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Quick dry fit so I could see what I go
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Now the real fun. Time to build this bitch
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Fire control group installed. I may end up tapping a mark and back fill it for fire/safe. In case the wife needs to use. Also can't see as well but mag release installed. I must not have taken a photo of the bolt catch being put in.... Oops. But it's done too
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Ejection port cover installed. The barrel has been greased and installed. The gas block and gas tube also installed. The forward assist was a bitch without a mag block for my vise. Should pick one of those up for future.
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Installed take down pins on lower and installed stock tube and buffer assembly.
Installed standard carbine quad picatinny hand guard. A4 flash suppressor. Only need A4 front sight post and I have my best friend from Ar Ramadi back! (Nah looks cleaner without it)
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Fully assembled and completed all functions tests! This baby is ready for some eyes and to hit the range! .... Once this Covid-19 restrictions end... 😞
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4x prisim sight from monstrum. Red/green Dot. Not quite on par with my trijicon acog... But I'm not rich. So this will suffice until a better option is available. Got a great deal on the optic. Also started adding my Larue handguard inserts, but stopped because now I want to run a 45 ° offset sight in case main optic goes down or I want to shoot short range quicker. Will update once I find a sight I like.
So that's my build. First polymer 80 AR build. I have 2 poly80 G19 kits coming as well. I'm looking forward to getting my hands on them and getting back to the build. Never built a handgun before, so it will be a total new experience for me. My only weapon knowledge revolved around my AR, my 240 bravo, our .50, and my smaw rocket launcher. I'm always eager to learn a new weapon/weapon system. Hope y'all enjoyed the build. Looking forward to sharing my next 2.
Thank for checking it out! Keep on building!
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