5.7 X 28

[Microgunner]

A guy just pawned (5) very nice rifles one of which is a Hughs Precision AR-15 with a 5.7x28 upper and EOTech 517. It uses the PS90 50 round magazines. This thing rings the WOW bell.

[imschur]

how do you resist and not buy these things

[Microgunner]

The man appeared rather wealthy (Rolex, Mercedes)  so I believe he will redeem them. He didn't know the banks were closed today and needed cash to close a real estate deal so he says. I don't resist enough, that's my problem. But truth be told most firearms I buy I order new.

[Madhouse]

micro - these are a blast to shoot!  Mine is a 10" upper mated to my registered SBR RRA lower, with an SWR Spectre suppressor.  Tons of fun!

[Microgunner]

Holy crap. Ultra cool +1.

[Madhouse]

How do you like my "brass catcher"?  LOL!

[Microgunner]

Does it eject from the mag well?

[Madhouse]

Yup.    ;D

That's an old smoke plastic AR mag that I removed the spring and follower from and hacked the feed lips off with a dremel.

[Microgunner]

It just keeps getting cooler.