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I don't have experience with the sionics but I have a few BCM 11.5's and also a balistic advantage 11.3 hansen profile. Both run with and w/o my can very reliably and I haven't had any issues that I can remember. Both with standard carbine buffers and springs and anything from my duty ammo to plain old 223. I also can't remember the gas port sizes off the top of my head. I know then I emailed BA they had no problem telling me and BCM would not tell me the size.
PMC Bronze, for those unaware, is probably the weakest brass cased 223 on the market.Quote:
Originally Posted by nightchief
Which has me really confused.
If Sionics RGP barrel is running weak ass 223 in 20 degree weather unsuppressed why in the world are manufacturers still producing barrels with 0.080”+ gas ports?
So you can run Tula at 20 degrees? :confused:Quote:
Originally Posted by Eurodriver
You will not be disappointed. I have a bcm elw standard and a sionics rgp barrel both are reliable. The sionics cut my group sizes in half.Quote:
Originally Posted by Captains1911
That's simple - to account for loose gas keys, leaky gas blocks, and crappy installations....Quote:
Originally Posted by Eurodriver
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My Sionics upper with RGP barrel functions perfectly unsuppressed with everything I’ve fed it so far, including Federal M193, Wolf Gold, and PMC Bronze. Ejection is around 3:30-4:00, with Sprinco blue spring and ST-T2 buffer. Now I just need to wait to test it in some sub zero temps.
My Sionics RGP barrel runs fine unsuppressed.
I don’t run any anemic ammo, so I can’t vouch for that.
I shoot a lot of the Wolf Gold.
None of which should happen with a quality build or a factory tested assembly.
Quote:
Originally Posted by bruin
How is the lock up on the v3 sionics rail?
Just pinned my standard BCM 11.5" barrel at .073" dia. gas port. Have to tear down my BFH to compare.