platic ar lower???

[sarduy]

i just found this complete lower for 129.00 but comes with a platic lower like a glock pistol........

anyone...?

http://newfrontierarmory.com/catalo...ducts_id=312&zenid=lcav56k76dhm8bt97qbh3kls45

 

[trueg50]

Yup, polymer lower. Lots of folks are moving to polymer due to its resistance to corrosion and its durability.

Using a polymer lower S&W M&P 15-22 makes the rifle incredibly light.

 

[sarduy]

i may take a closer look.

 

[kmcintosh78]

From what I have read, there is very little weight difference between the milled aluminum lowers and the plastic style, I assume this is the Plum Crazy Lower.

 

[MMcfpd]

One discussion
Another discussion

 

[brandon_mcg]

bushmaster's carbon 15 is made out of that type of material. feels like an airsoft toy to me...

 

[nalioth]

The company is called Plumb Crazy.

As noted in post #5, there is plenty of discussion here on these.

 

[greyling22]

I might pony up a few bucks more for one of these http://surplusammo.com/index.php?main_page=product_info&cPath=33&products_id=504 that said, I don't really see why a plastic lower wouldn't work.

 

[LKB3rd]

I saw one of these in a shop today. Even the hammer is plastic!

 

[pikid89]

I want one of those plastic cav arms lowers...seems like it would make for a nice lightweight gun

 

[Grunt Medic TXARNG]

This is indeed the Plum Crazy lower - complete with FCG and buttstock, it can be found elsewhere for $120-. One concern is that much of the fire control components including the hammer are also plastic - but you can swap out a standard AR trigger pack if you are so inclined. In polymer you save about a pound over using an aluminum lower.

I have a Velocity Firearms dedicated .22 upper with a composite upper receiver - I'l like to get a Plum Crazy lower and build a 5.56 upper on my plastic Velocity upper - and see just how lightweight an M4gery I can come up with. Such a setup would be ideal for biathlon events like the Pecos Run 'n Gun I did last year - a 5 mile timed run with shooting stages every mile or so.

I do like the Cav Arms lowers as well - and may have to get one before the last of them dries up.

 

[451 Detonics]

I did a Cav Arms build last year and really like the thing. I have some reservations on the Plum Crazy tho. The Cav Arms is a single polymer molder unit. It does not have parts like the stock and pistol grip added on after the fact. With any polymer or fiber re-enforced part, the places where parts are added like that are always weak points. The is a reason companies like Glock and HK form their pistol lowers out of a single molding.

My Cav Arms build was done with weight in mind, it is a full length rifle that weighs under six pounds with optics. I used a pre-ban Colt lightweight Sporter upper for the build.

 

[nalioth]

I did a Cav Arms build last year and really like the thing. I have some reservations on the Plum Crazy tho. The Cav Arms is a single polymer molder unit. It does not have parts like the stock and pistol grip added on after the fact. With any polymer or fiber re-enforced part, the places where parts are added like that are always weak points. The is a reason companies like Glock and HK form their pistol lowers out of a single molding.

The Plumb Crazy lowers are being run in 3-gun matches to no complaints.

In fact, I've not heard of any actual complaints or reports of breakage from those that use them.

 

[sappnasty]

451 Detonics, how much was that sharp looking lower?

 

[jerkface11]

451 Detonics, how much was that sharp looking lower?

ATF ran them out of business so you probably won't find one.

 

[MMcfpd]

There are almost always several of the Cavalry Arms polymer lowers for sale on Gunbroker in the $100-130 or so range.

 

[Liberty1776]

I just bought two of the Plum Crazy lowers for future projects. Cost $120 each. A friend of mine is the head of the local PD SWAT team, and also the armorer for the Dept. I asked him about these and found the Dept has three of them and has run them through the standard use and training that they do, which ends up as firing thousands of rounds each day they shoot. They have found them to be as completely reliable and sturdy as metal lowers... As I'm just putting together a target / varmint rifle, I expect no worries...

 

[451 Detonics]

451 Detonics, how much was that sharp looking lower?

$100 through Brownells.

I have heard from several shooters of cracks starting around the buttstock nut on the Plum Crazy...these guys do use their guns hard but not to the point of abuse.

 

[Birddog1911]

I've also heard of cracks developing in the PC lowers; I'll see if I can find the specific info.

 

[unwise11]

I prefer metal, the feel of the Bushmaster Carbon- 15 is not right, I like the extra weight, more solidarity if you ask me.
Although they do work, I am a bit opinionated when it comes to rifles, though I love shooting the Glock 22..

 

[451 Detonics]

On that build I was trying for light weight, I have an H-Bar, a 300 Whisper, and an 11 inch shorty...next will be a 6.5MPC.

 

[sappyg]

i'm indifferent either way. glocks hold up fairly well IMO. IIRC the Scar has a polly lower too. TBH i would like to have one.

i guess when the AR 1st came out the aluminium reciever and plastic furniture must have been a real scandle back in the day.

 

[wnycollector]

ATF ran them out of business so you probably won't find one.

They are $89 here http://dsgarms.com/category/26_1/Lower_Receivers.aspx

I'm the happy owner of two cav arms lowers. They are solid, super lightweight products.

 

[pikid89]

i cant afford to build an AR but i might have to grab one of those lowers for the future

 

[frankenstein406]

Do either of these have a warranty?