Plum Crazy Firearms lowers

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Wouldn't touch one. Get a standard forged aluminum lower and your kids will be using it, maybe even your grandkids.
 
I bought one 2 weeks ago and it is a very decent lower, even the trigger is not bad, bought a new upper and will take it to the range pretty soon to break the barrel in... by the way, people said that about Glocks also.....
 
I have a Plumcrazy lower with a DPMS oracle upper, have ran at least 2,000 rounds through it. No malfunctions at all. I took a chance on this lower because I wanted a very light AR truck gun. I got what I wanted and I'm very pleased with it. The rifle is about 6 lbs. with a 2x7 nikon scope and will shoot around 1 to 1 1/2 moa. Total cost was $615.00, I'm sure that a metal lower is more stronger but the weight factor is what sold me on it. Its a very good and tight fit between the upper and lower. Decent trigger (5lbs.) whats not to like.
 
Basically, pretty much anyone who's tried one likes it. Everyone who hasn't doesn't like it.

Remember, this is a complete lower assembly -- including buttstock -- for a really nice price.
 
It would be nice if I could ever find one in Virginia.

Does anyone know if they have their other colors out yet?
 
I'd be hesitant to trust it on a heavy use rifle. It could be ideal with a .22LR upper though. Even then I'd probably go with a standard lower since no doubt it would get other uppers slapped on down the road. I'd always be worried about the Plum Crazy lower.
 
I bought one for real cheap. Played with it and it was just fine. For a range toy I'd get another.
 
A complete PCF lower (stock and everything) is cheaper than some stripped lowers. If I were building a lightweight or budget conscious AR, I would strongly consider it.

I really love threads about the Plum Crazy lowers. This is going to turn into 5 pages of hate by people who have never seen one in person with only one or two posters saying they have them and no problems.
 
I work part time in a large gunshop that sells a lot of PCF lowers.

Majority come back with some defect, broken parts, worn out FCG, egged out FCG pin holes, you name it, it's happened.

I've torn them apart and fixed them myself, the majority of the issues I see concern the plastic FCG that tends to give around 3,000 rounds or so. Sear engagement surfaces wear down, gun starts doubling. Next most popular malfunction involves the take down pins coming Plum out of the receiver sending the spring and detent across the room.

In my opinion you'd have to be Plum Crazy to depend on one of these lowers for anything but a budget .22 LR build.
 
I work part time in a large gunshop that sells a lot of PCF lowers.

Majority come back with some defect, broken parts, worn out FCG, egged out FCG pin holes, you name it, it's happened.

I've torn them apart and fixed them myself, the majority of the issues I see concern the plastic FCG that tends to give around 3,000 rounds or so. Sear engagement surfaces wear down, gun starts doubling. Next most popular malfunction involves the take down pins coming Plum out of the receiver sending the spring and detent across the room.

In my opinion you'd have to be Plum Crazy to depend on one of these lowers for anything but a budget .22 LR build.
Click to expand...

Seems I read similar comments every time I read a long thread on these lowers at either AR15.com or m4c.net.

If you want light plastic, find a Cav Arms MKII and use any quality LPK. You're stuck with its fixed buttstock, but it's light and proven to be fairly durable. They are currently out of production but will "probably" be back in production with a new company sometime soon. Maybe.

Otherwise, with quality forged aluminum lowers starting at about $60 from various brands, and many options for inexpensive buttstocks and LPKs, I just don't see a reason to take a chance on the "plum crazy" lowers.
 
rogertc1 come on. Just because a material works well in some applications does not mean it will work well in all. Take MiM. It works very well in some Firearms parts but not others.

The AR lower is built to certain specifications and dimensions. Polymers don't work well in these dimensions. Yes there are other rifles out there that use Polymer lowers and function. However they were designed from the ground up this way. Not to mention I bet they use a higher quality polymer than PCF does.

There have been far to many reports of failures on these yet I don't see the same complaints about the SCAR, etc.
 
Agree with Kwelz comments, and some additional notes. First, the AR receivers were designed from an aerospace perspective using 7075 aluminum to be as light as possible. 7075 aluminum is very strong and doing a direct switch to plastic with the same shapes and dimensions is begging for trouble.

Perhaps more importantly however are all the plastic little parts on the PC LPK. Only a few companies have dared to make hammers out of plastic, and none of them impress me much - and the other two I know of are from premier world-class companies (FN Herstal in their bullpup designs, and Beretta in the Storm). The Glock trigger isn't really comparable because all the critical sliding parts are metal.

Just because a material works well in some applications does not mean it will work well in all.
Click to expand...

Repeat x1000. For another example, look up the disaster of FAL upper receivers (critical load bearing part) that were made out of aluminum by a US company that didn't have a clue.

The fairly successful Cav Arms MKII receiver was designed from ground up to be polymer (nylon-6) and is thickened in many areas compared to an aluminum lower. Those have proven fairly durable, with Cav Arms having put 50,000 rounds on one in mostly auto fire, but even so they have never been considered as "mil spec" (which they aren't) or anywhere above good hobby/recreational level kit.
 
If you think it is a good deal, buy it. I bought one then bought an A3 upper and put a EOTech on it, will take it to the range soon... it looks pretty solid to me and fits nice and tight on the new upper...
 
Lowers yes. And those lowers were built from the ground up to be polymers. We gave already covered that. The FCG however is metal.
 
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