Quoted:
Yup, I saw the 14 page monster that didn't answer the basic question.  Thanks for pointing this out as a dupe, although it isn't.

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OK, I am afraid I feel like I'm about to step in a pile of poo, but I loved Travis' methods in the "Art" DVD, bought and installed the Redi-Mag and am now awaiting the B.A.D. to complete this project.  Any new news on this product?  Thank you!

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Last I heard is they were trying to make it with their polymer compound they use with pmags.  Guess its very low priority (ie. they cant dedicate a machine to it), they dont feel like they have enough to begin selling to the public, or it failed with polymer.  

Although most dont seem to be as nice looking as the prototype one magpul has, there are some alternatives.
http://www.calguns.net/calgunforum/showthread.php?t=172429
http://www.calguns.net/calgunforum/showthread.php?t=165370
http://www.medeshafirearms.com/Buttstocks.0.html

ones that dont stick through trigger housing:
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=9900&title=AR-15%20EXTENDED%20BOLT%20RELEASE
http://www.bravocompanyusa.com/Extended-bolt-catch-p/bolt%20catch%20-%20extended.htm
http://www.bravocompanyusa.com/Double-Pad-Extended-Bolt-Catch-p/bolt%20catch%20-%20double%20pad%20extend.htm

You can search google for ar15 extended bolt release to find others I'm sure.

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I tried the one from Brownells and it didn't fit with the Redi-Mag.  I saw the calguns one, but I was hoping to support Magpul folks and Travis.  I may have to another route...  I'm surprised Redi-Mag didn't come up with this.

ETA:  Thanks for the replies BTW, much appreciated…

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I agree with supporting Magpul, but what it comes down to is supply and demand.  Magpul takes a long time to release things and other people that can specialize in just one thing can get it to us.  Having the extended release made of polymer does seem to raise some quality concerns for me though.  Plastic just doesn't seem like it'd have the durability and longevity for a bolt release; something thats going to be hit almost every time a mag is inserted.  Seems like there would be a lot of flex in it at the thickness and length needed to be usable, as well as the attachment to the release itself.  

I agree that it really is odd that Redimag doesn't have it, or at least something close considering they've gone to the extent of adding the extended mag release (for the redimag), as well as the button thing to make the bolt release reachable.  Maybe they just dont want to be seen as copying someone elses idea.  

Anyway, I got sick of waiting for Magpul to release it, so I bought one from a guy at calguns as well.  I dont really care for the wavy things on the sides, so I'll probably grind those off, but it works and will probably outlive me. (I didn't like the one that had the squared off angle)  I am waiting a bit longer to see if Magpul does come out with one for my other AR's though, and will give them a shot depending on 3rd party durability tests (if its plastic).

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A lot of the strength of the pmag isn't necessarily the plastic itself, but in the design of the magazine.  Even just pushing on the unsupported parts on the pmag, you can feel some flex.  Its not a big deal with a mag since those parts with flex really dont have any pressure on them anyway.  Even with the lips, it is very supported by the angles in the back and the shortness of the lips. I'm not going to ruin my mag by testing, but I'm certain if that one were to remove that bracing on the back of the lips, they wouldn't be able to hold ammo nearly as well.  In addition, the back (supported) part of the lips is what seems to be carrying most of the pressure from the next round, except during the brief time while a round is stripped off.  I would be curious to know how much the lips flex during this process, and if that flexing, in part, is what makes the magazines more reliable, allowing the round to enter at a slightly less of an angle.  

Now, take a long plastic piece that has absolutely no reinforcement along the majority of it, except by thickness alone and the holder that attaches to the bolt release.  Add in the general forces using the item in the worst possible direction for stability.  (The forces applied would be the same direction as if you were using it as a pry bar.)   I just have my doubts that plastic is the way to go with something in this position, and if done so, would lead towards more of a squishy feel than a deliberate movement.  The harder they go on the plastic means that the more brittle it becomes, but they want it to last, so it has to be flexible enough to withstand the constant flexing.  I'm just not sure they can come up with a blend that long that will support the needs with out it being considerably thicker then the prototype metal counterpart.

Granted that it really doesn't require a lot of force to manipulate the bolt release, but we're talking about battle conditions here as well.  High stress, high adrenaline combined with a mag change (or worse yet, a double feed or other jam) and someone is easily putting as much pressure as their finger will on that little lever.

I'm really hoping that I'm wrong, and I'm definitely willing to give it a try, depending on costs. (not going to drop $50 (the price of most of the metal ones) on a plastic piece that may or may not end up being stable, but I'd probably do it for $20).  Magpul tends to be pretty reasonable in its prices though, for most items (except higher end stocks).