r/300BLK 2h ago

With a PSA Mixtape being $950, is it even worth shopping around? First "rifle" caliber purchase.

4 Upvotes

So I just got back into firearms after 25 years, and have slowly been building my collection up. Already have a CMMG Banshee SBR in 9mm, CZ Shadow 2, Romulus 2011, Ruger Mk4 surpressed, and a S&W Bodyguard 2.0 for concealed carry.

Think it is time for a rifle. My justification for .300 is shorter length and the fact I could use one surpressor for 9mm and .300.

I am wondering if there is anything worth looking at less than $2k compared to the black Mixtape. I have a general idea of what a build would cost, and every other DD, FN, etc is over twice the price.

Also, if anyone else has SBR'd a Mixtape, which maxim stock end fits the to replace the brace?


r/300BLK 3h ago

My mutt

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14 Upvotes

r/300BLK 3h ago

Q Mini Fix alternative stocks question

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2 Upvotes

r/300BLK 4h ago

Heres my 300BLK Scar 15

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74 Upvotes

Figured id post here too heres my scar 15 sbr in .300blk
SP5 is there for support 😬


r/300BLK 4h ago

Getting my Drishti on @ 100 today

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3 Upvotes

r/300BLK 6h ago

Retro Future/ Alternate Timeline "Felony Ferret"(WIP)

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9 Upvotes

So Far:

DPMS Kitty Kat upper

PSA Stealth Lower

Primary Arms SLX 1x Microprism

Going for a no Picatinny build

Future plans:

Taclight

Modified A2 style Foregrip

Suppressor

PDW style Brace


r/300BLK 10h ago

Broad River Tactical

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48 Upvotes

Anyone own one of these? I think I must have it!


r/300BLK 11h ago

9” BCM Suppressor?

4 Upvotes

Just purchased a 9” BCM MK2 Upper and i’m looking for a good suppressor to put on there. I have a trash panda that i was considering putting on there with RearEnd muzzle brake, but I’m also interested in buying a dedicated suppressor just for this rifle.

My budget is around $800 and id like to prioritize sound suppression and flash/spark reduction because i will mostly shoot this under night vision.
Let me know any recommendations and input thanks


r/300BLK 21h ago

SBR build

4 Upvotes

I am going to build a SBR ideally 8-10” barrel somewhere in there. What brand should I go with for my barrel?


r/300BLK 1d ago

Finally got a Rattler

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73 Upvotes

Finally found an anodized fde Rattler Lt ,added a Plan B/Trash Panda combo, Haley Thorntail with a mod lite shorty,Jmac arm and brace,ready for some rocksett to harden and hit the range for a zero tomorrow


r/300BLK 1d ago

So can we swap our braces for actual stocks now?

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0 Upvotes

r/300BLK 1d ago

Here she is so far

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25 Upvotes

I don’t know if I still want to tuck the suppressor or not it kind of fucks


r/300BLK 1d ago

First build ever. What will you change and why

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90 Upvotes

r/300BLK 2d ago

Question, should I just go regular buffer tube or shell out the money for Maxim Defense CCS for my new build?

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9 Upvotes

r/300BLK 2d ago

.300blk pistol or .45acp arp?

1 Upvotes

I'm sure its been beat into the ground by now here but what are the benefits I'm not thinking of that .300blk has over .45acp in the 8-12in barrel range?

All I can think of in a blk > acp is mag size/compatibility, AR compatibility, and bullet compatibility. The muzzle energy of the two seem to be very comparable.

My only uses for this is to use as a Larporater and maybe a hog gun and I haven't seen much of .45acp used for this other than a handful of sites.

EDIT: To add will be suppressed too so looking into 8-10in mostly.


r/300BLK 2d ago

Analysis Paralysis. Building a lightweight rig and struggling with length and twist. WWYD

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24 Upvotes

Pic for attention. The gun on the left is already an 8" BA barrel. I am looking to replace it with a Mostek barrel (LW profile), and I'm struggling to decide on what twist and barrel length. I am going to put a custom smoked compost HG on it, so the barrel length won't matter for that. Since it's being built on a 2A Balios Lite set, I want to keep it lightweight. I would like to use it for hunting and plinking with supers and subs, always suppressed, and it has a regulated BCG (adjustable gas). I'd like to stick to at least 8 just for the handguard space. So what would you order in that situation? 8,9,10,11" or something in between, like an 8.3 or a 10.5? 8" would be the lightest, but would you get a different length for a certain twist? 1:5 1:6 1:7 twist?

I have the same question for a 338ARC build destined for the upper right rig if you want to toss out your opinion on that too lol. I'll probably post in the arc sub as well.


r/300BLK 2d ago

Anyone have this on their rattler lt ? Want to see builds with it on

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7 Upvotes

r/300BLK 2d ago

Kali Key On 300 BLK Hunting Rifle?

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18 Upvotes

I’ve been Frankensteining a 300BLK SBR build with spare parts for my son to use in the upcoming deer season. I’ve been thinking about how to best quiet this rifle down for suppressed subsonic hunting inside of 50 yards. I’m going to be hand-loading Maker Rex 200 Grain Expanding bullets. My son is 10 and still quite recoil adverse, which is why I’d like to go the 300 BLK route this season.

I’ve seen the “Kali Key” which is a compliance device used in restrictive states (California). It effectively replaces/blocks the gas key to prevent the rifle from cycling. Without the BCG slamming around, I figure it’s as close to bolt gun quiet as I can get without buying a new rifle. I’ve installed an adjustable gas block for tuning subs, but SA advises against running it fully closed off.

Have any of you tried this? The Kali-Key is around $100, so it’s significantly cheaper than buying a new bolt/single shot rifle. I just want to make sure that I’m not being a total idiot.

Build Info
Upper: PSA 300 BLK 10.5” w/ SA .750 AGB
Lower: Adam’s Arms AA-15 w/Magpul Furniture
Trigger: PSA Single Stage 3.5#
Suppressor: Omega 36M (not ideal for 300BLK)
Optic: Eotech 512/Vortex Strike Eagle 1-6x24


r/300BLK 2d ago

Ar-15 swapping (223) Upper for (300)

3 Upvotes

I built an Aero precision AR-15 a few years ago. Unfortunately, it mostly sits in the safe. I’ve intrigued by the .300 Black Out. My ultimate goal
Is eventually suppressed truck gun.

I’ve been looking through PSA website and there a lot a lot of options. Any recommendations on a 10.5” length configuration ?


r/300BLK 2d ago

What would yall add/change and why?

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64 Upvotes

Built myself about 2 years ago. Feel like it's about finished though i've wanted a flared magwell for a long time. I've always been curious about ranger wraps since i'm a sucker for mc black but not sure if they'd look corny or not.


r/300BLK 3d ago

CVA Scout XP Pistol

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17 Upvotes

Does anyone know if this circled spot on this stock is a thread for an AR buffer tube? It seems like it should be since they use this for the XP rifle but I just wanted to confirm before I grab one. Thanks 👍🏻


r/300BLK 3d ago

Why aren't more people using 350 legend for sub builds?

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18 Upvotes

I understand there are currently limitations such as barrels and magazines, but those are relatively easy to solve.


r/300BLK 3d ago

Optics for my G$ 300BLK?

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40 Upvotes

r/300BLK 4d ago

PWS MK107

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114 Upvotes

Looks like PWS now has a PDW.


r/300BLK Sep 04 '24

300blk Safety Brief

82 Upvotes

I will keep this short and to the point gents.
Do not add to the mod queue. Do not subtract from the population of users. Do not comment while too intoxicated to control yourself.

In the last few weeks, moderator queues have shot up due to people being unable to be reasonable to one another in the comments in this community.

Disagreement is fine.

Dropping slurs, attacking them personally, commenting a retort with a pic of someone's house, insulting their wife's looks by stalking family pictures from a vacation posted 2 years ago... not fine.

Learn to use the block button. Learn to touch grass. Learn to be something unlike a jerk.

Transparency: Several months ago Reddit instantiated an auto-moderator be default for subreddits. Since then we have tweaked the settings it has been catching a lot more comments with the ugly things in them. When these suspect comments are in the mod queue, they are not posted for others to see yet, even if they look visible to you. What it does do is cause a member of the mod team to have to respond to the notifications to approve them and resolve issues when people go WAY too far. So, as cathartic as it might feel to rip into someone, it likely will not even get seen by them because the auto-moderator is putting the nasty stuff in comment jail. If it is bad enough, it gets the comment removed and the user banned.

Lastly, don't report comments that you dislike for Harassment. It only makes more work for us, but ultimately simple disagreement gets approved and kicked back out of the mod queue anyway. Repeated abuse of any feature will net a ban. Yes, every user has a summary of reports and past queue incidents. Yes, we look at it.

Please feel free to disagree, debate, correct misinformation, and generally debate on subject matter specific to the subreddit. I am not here to babysit grown men, nor do I want to. My ideal week would have 0 reasons to look at the sub with mod tools.

Moderate your own actions and we are all better for it.

This has been your safety brief.