AR Five Seven: 5.7×28mm AR Upper
03 Dec 2008
AR57 PDW Upper on Standard AR Lower
The Firearm Blog has the goods:
The AR Five Seven is a one piece 5.7×28mm upper that attaches to a AR-15 lower and uses the 50 round FN P90 magazines.
Also see his earlier post on the subject, which includes a reader comment about turning an AR magazine body into a brass catcher.
December 3rd, 2008 at 4:53 pm
That’s pretty cool, but am I right in thinking there’s no foregrip and thus it’s going to be fairly hard to use the stock? I mean, you have the stock against your shoulder, your eye up to the sights, where to you put your other hand to steady the aim? Perhaps some kind of plastic barrel shroud would be good. Before they’re banned. Again.
December 3rd, 2008 at 8:14 pm
is that a straight barrel with no shroud or muzzle break? Or is the muzzle break internally surrounding the whole end of the barrel like the WA2000?
December 11th, 2008 at 1:16 pm
[...] AR upper ever Murdoc Online AR Five Seven: 5.7