Polymer80 80% AR pistol build thread...

[1911ly]

Looks great! The upper is easier to build then the lower. You won't have any issue. Aligning the barrel nut so the gas tube lines up with the BCG is the hardest part and it's not that hard. Be sure to use some moly lube on the nut so it can easily be removed if you want to swap the barrel. I am eager to see the finished project!

 

[sgreen3]

Looks great Lebowski, I'm really getting the itch to try an 80% poly for nothing more than just to try one. Looking at your thread just makes me want to try it even more. Cant wait to hear how it does once you get it together! Would you happen to know what the assembled width of the lower in the jig is and what size drill press did you use I have an 8" model... Just wondering if it will fit in my drill press mil...

 

[1911ly]

Looks great Lebowski, I'm really getting the itch to try an 80% poly for nothing more than just to try one. Looking at your thread just makes me want to try it even more. Cant wait to hear how it does once you get it together! Would you happen to know what the assembled width of the lower in the jig is and what size drill press did you use I have an 8" model... Just wondering if it will fit in my drill press mil...

A lot of people do them with the small Harbor Freight drill presses.

 

[sgreen3]

A lot of people do them with the small Harbor Freight drill presses.

Ha ha that's why I was asking, that's the one I have the little 8" model, lol

 

[Psode27]

You may have to be creative with bit changes (swing the table out?) But I bet it'll be fine. Mine was nothing big or fancy.

 

[sgreen3]

That's very true, Im defiantly gonna have to give one of these a try now, ha ha

 

[55fairlane]

Polymer80 units are decent, my gen 1 broke with a dedicated .22 upper,called loran at Polymer80,he replaced with a new gen 2 with jig and tooling! we spoke about Polymers,and he gave some tech specks on how and why the gen 1's failed

I used a milling machine (in my garage ) and have finished a a few in plastic and auilm, give it a try,very forgiving lower to make !


great looking build !

 

[Lebowski]

Lower parts kit should ship today. Order was placed over the weekend and AIMSurplus charged me today. Order was 'pending verification' since I ordered some AK mags too and I guess any order with mags in it gets manually reviewed to make sure they're not sending 'high capacity' mags to restricted states...

Anywho, will be happy to get the LPK. Curious how well everything will fit in the lower and if I'll need to remove anymore material or not. I may upgrade to some anti-walk pins or something to keep things in place. We'll see

 

[sgreen3]

Be looking forward to see how it does!

 

[Lebowski]

Woops. Everyone is out of stock of AR lower parts kits that when I finally found one in stock I just tossed it in my cart and ordered without reading the description. This arrived today: New Frontier Armory C-9 Lower Receiver Parts Kit

Looks like it's specifically for the C9 9mm lower....

I'm an idiot...

Check the classified soon if you want to buy it, since I have no use for it... d'oh!

 

[sgreen3]

Man that sucks, I hate when that happens get all excited about finding a part then not fully read the description. Been there myself before lol. Here MASdeffense has some in stock if your still looking for a LPK LOWER PARTS KIT AR15 | LPK | MAS Defense

 

[1911ly]

Woops. Everyone is out of stock of AR lower parts kits that when I finally found one in stock I just tossed it in my cart and ordered without reading the description. This arrived today: New Frontier Armory C-9 Lower Receiver Parts Kit

Looks like it's specifically for the C9 9mm lower....

I'm an idiot...

Check the classified soon if you want to buy it, since I have no use for it... d'oh!

PM me with a price, I've been thinking about going a 9mm.

 

[Lebowski]

Updates soon

 

[Lebowski]

So the barrel came in today. The handguard will come in Monday but I had a spare handguard from a previous build to do a mockup.

Still needs lower internals, upper internals and gas system as well as muzzle device. Still a bit to go but it's starting to look like an AR pistol.

 

[Lebowski]

Barrel: http://www.amazon.com/gp/product/B00SGBR6SY?psc=1

Handguard: http://www.amazon.com/gp/product/B0163OBRQ2?psc=1


Both ordered from Amazon because I'm doing this as cheaply as possible and because I'm too impatient to wait for other companies to ship goods.

 

[Lebowski]

Alright, it's coming together. Got the handguard in yesterday.

It's not properly fitted in the photos but will dig out my upper vice block and get it on and lined up properly after I get my gas block and gas tube in. Then I'll be sure to get it all lined up properly.

 

[Psode27]

looks good!

 

[Disposable Heart]

Solid, this is relevant to my interests.

I like how they beefed up the critical areas, rather than just making a polymer copy of USGI specs.

I ordered their Glock 80% frame kit, they should be shipping mid March! (Fingers crossed)

 

[Lebowski]

New parts just came in. Finally going to finish out the lower today or tomorrow and got the muzzle brake in.

All that is left is the gas and bolt system.

 

[Lebowski]

Update: After some consideration I've decided to use the Polymer80 lower on a different, future build. The parts pictured in this thread have been transferred over to a RIA stripped lower I bought from the LGS today. I figured the polymer lower would be better for a 22LR or 9mm build.... and because I eventually want to supress 300BLK I assume I'm going to need a proper lower and not one I milled myself.