Quoted: It really looks like Kurt's gonna deliver on the Tommy lower, imagine what sales will be like for Oly Arms .45ACP 7.5" bufferless upper's will be! (with $200 in tax it would still be cheaper than a HK USC!)
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The OA-93 series is not a bufferless design. It actually has a buffer tube, but it is parallel to the barrel.
The PCR-9/10/40/45 are blow back designs and also use a buffer.
That said, I am not familiar with what Kurt is designing, but Kurt has a good reputation on making good stuff. If the order is large enough Oly will work with Kurt. If I an help, feel free to drop me a line.
Oh yes, on the OA-93 with the suppressor, it has no noticable rise at all. It really is rock solid. A nice thin flame shoots out 1-2 feet and is not blinding at all. Without a suppressor, you see a major ball of fire and a LOT of noise. The noise is on the edge of needing hearing protection, where a 16" barrel is not that much of a problem and a 20" barrel is very quiet in relation to the 16"/7.5".
Can was a Coastal M-223, 28 ouncer. Very nice can for the price.
For those who wonder, both the 16" and 7.5" had a FIRSH handguard that did not heat up at all. Of course, it was lightly sprinkling and cool out!