300BlkTalk

I have a tax stamped 300 blackout with a 9" barrel. (Thanks all for helping, you made it so much easier) Anyways. I know I can put a 16" upper on it, no big deal. But, am I allowed to put a 14" upper on it, or can I go shorter than the 9", and put a 7.5" 223 upper on the low...

Ok. I will look into it pretty soon. Lots going on. What a great post sir, thank you.

I'm going to try to get the forward assist.

You have to hold your head up higher when using the rmr because it sits so high above the bore. This happens to be where the gas is blowing around. I went through several powders this year looking for an accurate load. One for supers and one for subs. CFE BLK, H-4227, LilGun H-110, H-4198, and a cou...

The RMR is atop the ACOG, and both are offset about 25 degrees. Looks cooler and holds easier.

I built a nice 300 BLK 9" tax stamped. It has an ACOG with an RMR on it. When you shoot using the RMR, you get an unpleasant puff of smoke in your eye upon every shot. Especially with supersonics.

Is there anything that I can do to correct this problem?

It shoots 168 subs just fine with the H2 setup.

The bullets are copper jacket, lead core. 6.5s ogive, and any weight needed can be built, and I have a choice of concave, flat, or boat tail designs. I can use brass jackets too, but Im not really set up for those in all weights yet. I roll my own. I have CFE BLK, LilGun, H-110, H-4198, and IMR 4227...

Does it get cold where you shoot? If so, I've read some really bad things about LilGun. Might want to rethink that one. Im looking for info now.

Hello there. I am having a lot of trouble cycling lightweight rounds. I think I have a bolt bounce situation I’m not sure? I have a 9 inch BCM barrel opened the gas hole to .10" and I’m running a JP H2 spring. I have an auto bolt carrier group BCM. I can chamber a round from the magazine by usi...

ya i saw that.. she claims that she disassembled it (separated the upper and lower?) after cutting the barrel... hate to break it to you Karen, being in posession of both parts without a stamped lower or a pistol lower is still federal felony, even if they're not assembled. and oh yea.. even if sim...