Project Featherweight

[Dano5326]

Nice!

On the lightweight note, has anyone seen plastic/polymer port covers?

weight vs steel?

I can't remember where I saw one... I think it was on a new HK416

All I could find on the www http://www.opticsplanet.com/reviews/...15-m16-m4.html

[Jake'sDad]

So when are you starting the .308 Project Featherweight?

[Robb Jensen]

Nice!

On the lightweight note, has anyone seen plastic/polymer port covers?

weight vs steel?

I can't remember where I saw one... I think it was on a new HK416

All I could find on the www http://www.opticsplanet.com/reviews/...15-m16-m4.html

The MR223 has a plastic dust door which is probably 1/2 the weight of steel.

[GTifosi]

Mako has polymer ejection port covers here if its of interest.

[Mattyd]

Now here is a question...how bad of an idea is a factory Colt 6720? I would love to have something under 5 pounds and was looking at this being a pretty good out of the box option that tipps the scales at 4.7 pounds.

[Warg]

Now here is a question...how bad of an idea is a factory Colt 6720? I would love to have something under 5 pounds and was looking at this being a pretty good out of the box option that tipps the scales at 4.7 pounds.

The 6720 is a nice choice, but the weight is a typo. It's 5.7 lbs, not 4.7 (it's a 6520 with a flattop upper).

[JChops]

The 6720 is a nice choice, but the weight is a typo. It's 5.7 lbs, not 4.7 (it's a 6520 with a flattop upper).

Actually, both are wrong. A 6720 (right out of the box) weighs 6 lbs., 2.3 oz.

[Warg]

Thanks. Even 5.7# seemed a bit light.

[Mattyd]

Someone needs to inform Clyde Armory as their website lists the weight at 4.7 pounds.

http://clydearmory.com/colt-ar6720.html

[jgcl05@yahoo.com]

This is a great writeup! I've had a brick of an AR for the past 2 years and I'm finally putting it on a diet. There's a lot of good info and inspiration here. First my UBR is coming off, then my barrel is getting turned down. Thanks for all the info Robb!