.300 Blackout pistol build?

[kje54]

I know some of you think I'm nutz and that's ok, I don't care but I'm considering building one with a 5" barrel and put a mock can on the front. Why? Since when did we need a why...........

Having never done a complete upper build I'd appreciate some input on components.

 

[Shawn Dodson]

I suggest a minimum 8" barrel length for .300 BLK.

I like Wilson Combat for barrels. The ones I have are all correctly gassed and accurate.

SOLGW or BCM BCG.

Midwest Industries handguard.

Holosun HE508T green dot reflex sight.

 

[mcb]

I have a 9-inch and 5-inch pistol upper (and a 16-inch carbine). The 9-inch build is a bit easier as it used standard pistol length gas system and there are lots of handguard options. 9-inch give or take an inch or two is a good compromise length for quiet operation and still short enough to be convenient. Commercial subsonic ammo seems to work best in barrel around 9 inches too. Many of the commercial subsonic offerings go super sonic in my 16-inch gun.

All this said if your considering a brace on your pistol I would wait till early next year when we should know what the ATF is going to do about braced pistols.

My 5-inch. An old AAC 5-inch barrel with a 1:5 twist. The handguard is a modified DPMS tubular that works well over my Suppressor. Sights are a Vortex Sparc AR and 3x magnifier. SBA 3 pistol brace.

The gas tube is a bit short... the gas port is ~3.8 ahead of the tip of the bullet...

9-inch pistol. Again AAC 9-inch barrel and matching AAC Square Drop handguard (Key-Mod compatible, tactical candy corn). The sight is a Vortex Spitfire 3X prism (Gen1).

JMHO but I would not bother with a 5-inch unless your going to actually put a suppressor on it. Even with subsonic ammo it sort of obnoxious to shoot without the suppressor. For that matter without a suppressor I would not bother with a pistol 300 BO at all. I would go with a 16-inch and 300 Ham'r but that is sliding of topic.

 

[kje54]

I was thinking about it some more and I have a 7.5" BCA in 7.62x39 so a 300 Blackout would probably be redundant. Considering putting a fake suppressor on the BCA, thread is 5/8x24, don't want to go through the hassle and cost of putting a real can on it.

 

[kje54]

I have a 9-inch and 5-inch pistol upper (and a 16-inch carbine). The 9-inch build is a bit easier as it used standard pistol length gas system and there are lots of handguard options. 9-inch give or take an inch or two is a good compromise length for quiet operation and still short enough to be convenient. Commercial subsonic ammo seems to work best in barrel around 9 inches too. Many of the commercial subsonic offerings go super sonic in my 16-inch gun.

All this said if your considering a brace on your pistol I would wait till early next year when we should know what the ATF is going to do about braced pistols.

My 5-inch. An old AAC 5-inch barrel with a 1:5 twist. The handguard is a modified DPMS tubular that works well over my Suppressor. Sights are a Vortex Sparc AR and 3x magnifier. SBA 3 pistol brace.
View attachment 1108029
The gas tube is a bit short... the gas port is ~3.8 ahead of the tip of the bullet...

9-inch pistol. Again AAC 9-inch barrel and matching AAC Square Drop handguard (Key-Mod compatible, tactical candy corn). The sight is a Vortex Spitfire 3X prism (Gen1).

JMHO but I would not bother with a 5-inch unless your going to actually put a suppressor on it. Even with subsonic ammo it sort of obnoxious to shoot without the suppressor. For that matter without a suppressor I would not bother with a pistol 300 BO at all. I would go with a 16-inch and 300 Ham'r but that is sliding of topic.

Thanks but I'm the crazy guy who built a 4" in 556/223 without a suppressor just because I could. Actually assembled is a better word as the upper was purchased complete.

 

[mcb]

I was thinking about it some more and I have a 7.5" BCA in 7.62x39 so a 300 Blackout would probably be redundant. Considering putting a fake suppressor on the BCA, thread is 5/8x24, don't want to go through the hassle and cost of putting a real can on it.

Once you start shooting suppressed you will never want to go back.

 

[kje54]

Once you start shooting suppressed you will never want to go back.

Can't afford it so unless I win the lottery it ain't happening.

 

[mcb]

Can't afford it so unless I win the lottery it ain't happening.

A decent 30 cal suppressor is not that much more than a good upper. It is a bit of a hassle to get the stamp but if you pick the right suppressor you can use it across a bunch of your rifles. I run my SDN6 on four different ARs and one of my bolt guns.

 

[gotboostvr]

A decent 30 cal suppressor is not that much more than a good upper. It is a bit of a hassle to get the stamp but if you pick the right suppressor you can use it across a bunch of your rifles. I run my SDN6 on four different ARs and one of my bolt guns.

Heck, a YHM cans run around $5-600 and purportedly give decent performance. That's not to bad of a deal.

I'm considering a TurboK just to have.

 

[kje54]

Heck, a YHM cans run around $5-600 and purportedly give decent performance. That's not to bad of a deal.

I'm considering a TurboK just to have.

I can buy a new gun for that.........

 

[mcb]

The AAC Jaeger 30 has an MSRP of under $500 ($474.99), I have seen dealers with them under $450.

 

[kje54]

The AAC Jaeger 30 has an MSRP of under $500 ($474.99), I have seen dealers with them under $450.

plus the rigamarole with the ATF plus the $200 for a tax stamp. I'm really, really, really not interested, no converts here........

 

[mcb]

OK, your loss, they really do add another dimension to shooting. I love varmint hunting with mine.

 

[kje54]

OK, your loss, they really do add another dimension to shooting. I love varmint hunting with mine.

Well good, I'm happy for ya.

 

[gotboostvr]

plus the rigamarole with the ATF plus the $200 for a tax stamp. I'm really, really, really not interested, no converts here........

With a silencershop kiosk, it's not really burdensome. The cost of the stamp and the wait is the most annoying part. I had mine back in under 150 days.

But if it's not for you, it's not for you. If you're ever in my area, I'd let you try mine out. I never really figured it was worth it until I got to play with one myself.

Best of luck with your build!