Could it be true? I have one...and Billt doesn't? Then again, he's prolly got lots of stuff I don't so I'll just stop talking now before I bite off more than I can chew... mumble, mumble, mumble


I have an Oly Arms 9mm upper (bottom one in the photo above). I got a very good deal on the upper several years ago as I was shooting 3 gun matches at my club back in Illinois. The match was set up to be a modern version of Cowboy Action Shooting...same rules, just using modern arms. Pistol caliber carbines only. I was using my .45 Colt Winny 92 and thought I wanted something more tacticool.
It is a fun gun, but not the most reliable...the biggest issue is the positioniing of the mag in relation to the bolt. Here's my points on the rifle:
+ The hammer had to be modified (top smoothed off to remove the little "notch" on a stock hammer) so it would reliably contact the firing pin
+ Many people have reported that they needed a pistol caliber specific buffer...my stock carbine buffer is fine
+ This upper did not come with any magazines...Oly Arms sells modified Sten mags that fit in the mag well without an additional mag well block however I haven't tried these. I did buy a mag well block that fits in the well but it relies on modifiying the little bumps on the mag to limit how far it goes into the well during a speed reload. it is possible to blow right through the mag catch on the block and jam the mag deep into the action...causing misfeeds and stoppages. For this reason, the current set up is not something I'll use in competition or for home defense.
+ No bolt hold open...to me, makes it not a serious fighting rifle but a toy. BHO is a requirement (sorry AK fans)
For a range toy, if you take the care to gently insert mags and make sure they are locked in correctly, then it functions fine. It has surprisingly about the same recoil as a .223 because it is blowback and has a heavy bolt. There is a much less blast of course, so the total perceived recoil (including noise which is the disconcerting thing about ARs for inexperienced shooters) is much lower.
Again, it is a fun range toy but in currrent config I wouldn't trust my life to it.