What ever happened with that Delrin lower project. I havn't heard anything about it for some time now...
Regards, Ray
The Ray in Ray-Vin.Com

One more time... Delrin, while having marvelous machining properties (I know first hand), is too soft for use as an AR lower, or upper, for that matter.

I think the material used by Cav Arms for their lower is probably the best synthetic for this use.

2 more times!  Not Delrin!

Cav Arms uses a glass filled nylon, an excellent material at a reasonable price.  I know of many other resins that are far superior to nylon but the cost and production hassles wouldn't justify the expense.  

Go [url=www.boedeker.com]here[/url] if you want to buy some and try yourself.  Just make sure it will show up on an X-ray machine or whatever they use in airports these days.  You will need some type of reinforced/filled resin.

Actually, DELRIN 570, which is 15-20% glass-filled, might make a good lower.

hell yea!

heres some links of whats up, these links got off track a bit but neverless contain some good info.

btw CAV uses Nylon 6 (cast) and Glock too.

[url]http://www.ar15.com/forums/topic.html?b=1&f=5&t=152364&w=searchPop[/url]

[url]http://www.ar15.com/forums/topic.html?b=3&f=4&t=142536&w=searchPop[/url]

I thought someone on this forum was taking orders for delrin lowers a while back, that's why I asked. I cut a lot of plastics and you are right about the machining characteristics of delrin. But, the only are I see as a problem for an AR lower from the material is the thin sidewalls of the mag well, and these could be made a little thicker...
Regards, Ray