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-   -   ATI Omni Polymer Lower (http://www.calguns.net/calgunforum/showthread.php?t=632976)

vintagedude88 10-17-2012 4:19 PM

ATI Omni Polymer Lower
 
Will Turners be stocking this anytime soon?
http://www.americantactical.us/4590/detail.html

Distro 10-18-2012 4:29 AM

They have the complete lower (non-stripped) version at the Pasadena store for $139.99. Saw it there yesterday (10/17/12) afternoon. I did not see if they had stripped lowers though.

This is the one.

http://i.imgur.com/4LIbo.jpg

aaaslayer 10-18-2012 2:33 PM

how will it hold up to regular use (twice a month, 500rds each session)

anyone have experience using all polymer lower? is the LPK all polymer too???? except for the springs obviously. Is the hammer polymer? What kind of lpk?

I may try this out, for the price, it is fairly inexpensive.

aaaslayer 10-18-2012 7:18 PM

Just saw video reviews. The bolt release has to be pounded for the bolt to drop. You have to dremel the lower to get it to fit some uppers. I'll pass.

vintagedude88 10-18-2012 8:51 PM

Quote:

Originally Posted by aaaslayer (Post 9545597)
Just saw video reviews. The bolt release has to be pounded for the bolt to drop. You have to dremel the lower to get it to fit some uppers. I'll pass.

I saw the same review, even before posting this thread. I'm hoping ATI addressed those issues and fixed it.

Called Turners Pasadena, they said they don't have any but they said they have a complete carbine with that lower for 499.98. That's awful cheap for complete AR.

DirtyLaundry 10-18-2012 11:53 PM

Poly lowers are pretty terrible. There is not enough material around the receiver extension/rear takedown pin for the type of material being used. When they fail, they fail here. The BCG cycling into the receiver extension stresses transfers forces to the portion between the receiver extension and the take down pin and they catastrophically fail.

http://i690.photobucket.com/albums/v...OT-X/PClwr.jpg

There is no way to solve this as the design calls for a much higher tensile material in this area. The calvary arms lower seem to be the best in this regard as they added significantly more material/reshaped above the pistol grip around the take down pin/receiver extension necessitating integrating the stock/grip.

http://exurbanleague.com/Portals/0/b...arms_lower.jpg

A polymer lower might be cool to mess around with in making a lightweight plinking toy but I wouldn't use it for anything serious or on a gun that will see any sort of high round count.

AleksandreCz 10-19-2012 1:54 AM

Quote:

Originally Posted by DirtyLaundry (Post 9547411)

There is no way to solve this as the design calls for a much higher tensile material in this area. The calvary arms lower seem to be the best in this regard as they added significantly more material/reshaped above the pistol grip around the take down pin/receiver extension necessitating integrating the stock/grip.

http://exurbanleague.com/Portals/0/b...arms_lower.jpg

A polymer lower might be cool to mess around with in making a lightweight plinking toy but I wouldn't use it for anything serious or on a gun that will see any sort of high round count.

I actually like the looks of this more than regular but 180 for a stripped lower +tax and dros Is way to Expensive

DiogiDoc 10-19-2012 10:07 AM

[QUOTE=DirtyLaundry;9547411]Poly lowers are pretty terrible. There is not enough material around the receiver extension/rear takedown pin for the type of material being used. When they fail, they fail here. The BCG cycling into the receiver extension stresses transfers forces to the portion between the receiver extension and the take down pin and they catastrophically fail.

http://i690.photobucket.com/albums/v...OT-X/PClwr.jpg

Yeah, but if it breaks you now have and AR pistol!

DirtyLaundry 10-19-2012 5:32 PM

Quote:

Originally Posted by AleksandreCz (Post 9547570)
I actually like the looks of this more than regular but 180 for a stripped lower +tax and dros Is way to Expensive

Yea, looks wise its love it or hate it but capabilities wise its about as light as you can get as far as lower/grip/stock goes and I would trust this design much more than a simple polymer copy of the aluminum part.

That said if you're looking to build an AR15 on the cheap I see no reason to look further than a cheap forged piece from someone like PSA. PSA lowers regularly go for $80 and there's a plethora of lowers form other vendors local and online for $100 or less, iirc turners even had an off-brand lower recently on sale for $55.

We're talking ounces difference in weight while being much more durable. These poly lowers are for people chasing every last ounce of weight away for either novelty or some sort of lightweight backpack gun. IMO if you're going to go that far I would go with a different platform entirely, the SU-16 comes to mind.

But what do I know? I'm just a godless gun grabbing liberal.;)

DirtyLaundry 10-19-2012 5:33 PM

Quote:

Originally Posted by DiogiDoc (Post 9549221)
Yeah, but if it breaks you now have and AR pistol!

Yep, just have to rig some rubber bands up around the back of the BCG and don't point the back end of it anywhere near your face.:p

DiogiDoc 10-20-2012 4:26 PM

Quote:

Originally Posted by DirtyLaundry (Post 9551966)
Yep, just have to rig some rubber bands up around the back of the BCG and don't point the back end of it anywhere near your face.:p

Last time I was at Turner's they were out of the lowers and the rubber bands:12:

aaaslayer 10-20-2012 7:39 PM

I took my delton upper today to the one in Chino Hills. The manager tried mounting my upper onto that lower and it wouldn't close. He struggled and looked puzzled and pissed. Then he got another lower, an aluminum one this time and snapped my upper easily onto it. He grunted and seemed pissed at the fact that he helped me and I let him realize that the ATI lower they have is garbage. I think he was embarrassed because other people were observing us as he tried to mount my upper but couldn't. He probably got mad at me for making that lower look like crap and possibly his store. I was polite and all too because he let me mount my upper first before deciding to buy it but after witnessing for myself that it wasn't working I just walked away :/

AleksandreCz 10-23-2012 2:39 PM

went to turners today Checked out the M&P Lower. That thing weighs Nothing. decided to buy it. Going to skip all the Polymer stuff for now. Maybe in the future ill build an ar made mostly of polymer. but for now i'll stick with aluminum for lightweight lowers.

hooked on glock 10-24-2012 9:53 PM

Yo AleksandreCz how much did you pay on M&P lower ....


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