One of the most common questions people ask about the .300 Blackout is, if you already have an AR 15 in 5.56, is it a good idea to buy a .300 Blackout upper, or just purchase a complete .300 Blackout rifle?

Whether you should get an upper or a complete rifle in .300 Blackout depends on a few factors. If you’ve gotten really comfortable with your specific AR 15’s handling characteristics, then getting a .300 Blackout upper for it might be a good option. 

This allows you to use the same lower receiver and some of the same components, while still giving you the versatility of using both 5.56mm and .300 Blackout cartridges. This also means you spend the minimum dollar amount while having a dual caliber rifle setup. 

But there’s always that tiny problem of you having to frequently switch uppers whenever you need to use the one that is currently not installed on the lower. If you’d rather not mess with any of that, then you should look into buying a complete .300 Blackout rifle. 

This way, you can be sure that your new rifle is built from the ground up with all its components fitted together specifically for the .300 Blackout cartridge, which can help optimize its performance. You may also find that a complete .300 Blackout rifle offers better accuracy and reliability than an AR15 with a .300 Blackout upper, since it was built specifically for the .300 Blackout.

And if money isn’t a consideration, you’re sure to get a really good .300 Blackout rifle. But if you have no idea what to look for, here’s my list of the 7 BEST .300 Blackout Guns in 2023. Without further ado, let’s begin.

7: Barrett Firearms Manufacturing REC7 DI

Barrett Firearms Manufacturing is a company based in Murfreesboro, Tennessee. The company is famous for their high powered line of rifles which includes the M107 and M107A1 chambered in .50 BMG. But we’re only interested in their REC7 DI rifle.

The Model REC7 DI is available in both 5.56 and .300 Blackout. If you go to Barrett’s website, you’ll only find the 5.56 variant there. The one we’re interested in, the .300 Blackout variant, isn’t on their website, but as of the making of this topic, Omaha Outdoors has some listed for $1,899 apiece, with manufacturer product number 17176.

The REC7 DI has a high precision barrel with a length of 16 inches and a 1 in 8 twist rate. It uses a direct impingement system, an M LOK mounting system, Barrett’s proprietary three pronged flash hider, and a whole host of aftermarket Magpul accessories such as a set of Magpul back up front and rear iron sights, a Magpul MOE six position adjustable stock, and Magpul grip. 


With a lengthened gas system that ensures reliability with or without a suppressor, the REC7 DI can be a real pleasure to shoot. The upper and lower receivers are both machined from 7075 T6 aluminum, and all aluminum parts are Type 3 Class 2 hard coat anodized, then finished with Cerakote for the best aesthetics. 

You will also appreciate Barrett’s attention to detail as all human touch points on the rifle were refined using the finest parts, including a custom Radian Raptor ambidextrous charging handle, a Geissele or ALG Defense trigger, and an extended slimline Barrett hand guard with Magpul M LOK accessory mounting slots.

6: Bravo Company Manufacturing BCM Recce 16 KMR-A

Based in Hartland, Wisconsin, Bravo Company Manufacturing or BCM is a firearms manufacturer that offers high quality rifles like the BCM MCMR, the BCM MCMR LW, and the BCM RECCE 16, all of which are built with features that make them ideal for use in a variety of applications, from hunting and target shooting to tactical operations.

The BCM RECCE 16 series is available in more than a few different configurations and chamberings, all with an upper and lower machined from forged 7075 T6 aluminum with a mil spec hardcoat anodized finish. All have a mil spec steel barrel that measures 16 inches in length, perfect for use in a range of environments, from urban to rural. 


The model I recommend is the RECCE 16 KMR-A in .300 Blackout. Its barrel has a 1 in 7 twist rate and it uses a mid length gas system. It comes standard with a bolt carrier group made of mil spec Carpenter no. 158 steel, a shot peened bolt, a tool steel extractor and a full auto carrier and gas key, both chrome lined. 

The company also throws in two of proprietary parts like BCM KMR A Hand Guard and the BCM Gun Fighter compensator. You get all of these for an MSRP of only $1,810.

5: Daniel Defense DDM4 Hunter Kryptek Highlander

Daniel Defense is a firearms manufacturer based in Black Creek, Georgia. They are known for producing bolt action rifles, AR style pistol and rifles, components, and accessories for military, law enforcement, and civilian users. Their DDM4 series of AR 15 style rifles are available in different chamberings, and of the ones chambered in .300 Blackout, you’ll want the Hunter Kryptec Highlander variant. 

Its mil spec upper and lower are both CNC machined from 7075 T6 aluminum. The lower has an enhanced flared mag well and a QD swivel attachment point, while the upper has indexing marks and M4 feed ramps. The barrel is made of chrome moly vanadium steel and is cold hammer forged with a 1:8″ twist. 

It has a pinned low profile carbine gas system made of 4140 hardened steel that is chrome lined and has a mil spec heavy phosphate coating. It is threaded with a five eights by 24 pitch and comes with a 12L14 steel thread protector with a salt bath nitride finish. The bolt carrier group is chrome lined with an M16 profile and is mil spec MP tested with a properly staked gas key. 


With the rifle’s MSRP of $2,147, Daniel Defense includes their proprietary handguard CNC machined from 6061 T6 aluminum with M LOK attachments, a proprietary buttstock and pistol grip both made of glass filled polymer with soft touch overmolding, and a Grip N Rip charging handle with a body CNC machined from 7075 T6 aluminum and the handles and latch CNC machined from 6061 T6 aluminum. 

4: Black Rain Ordnance B.R.O. Scout

Based in Neosho, Missouri, Black Rain Ordnance is a firearms manufacturer known for producing high quality rifles, components, and accessories for both military and law enforcement as well as for civilian users.

The company offers a number of rifles in different chamberings designed for use in a variety of applications, from home defense to hunting to tactical operations. Some of their most popular rifles are under their B.R.O. series, a few of which are chambered in .300 Blackout. 

Number five on my list is the B.R.O. Scout. It has a SOCOM Profile 4150V Chromoly barrel measuring 16 inches with a 1 in 7-inch twist. Its muzzle has a B.R.O. MFS or a milled flash suppressor. Both upper and lower receivers are Spec15 Forged Aluminum while the bolt carrier group and charging handle are both Spec15 with a Salt Bath Nitride coating.  

Black Rain Ordnance Scout Series Fallout-15 Semi-Auto Rifle

The Scout also includes a B.R.O. DIT trigger with a 3.5-pound trigger pull weight, a handguard with a 12-inch modular rail, a Magpul MOE SL Grip and Stock, a slim 15-inch M LOK handguard, and a single Magpul Pmag 30 round mag, all for an MSRP of $2,439. 

3: Wilson Combat Recon Tactical

Wilson Combat is a firearms manufacturer based in Berryville, Arkansas. They are known for high end custom rifles, custom pistols, components, and accessories for military, law enforcement, and civilian users.

One of their popular rifles is the Recon Tactical chambered in .300 Blackout. It has the company’s proprietary match grade barrel that measures 16 inches and has a 1 in 7 twist rate with a threaded muzzle equipped with a Q comp, a hybrid muzzle brake and compensator. 

The upper and lower receivers are both mil spec, CNC machined from 7075 T6 aluminum forgings, and coated with mil spec hard anodized finish. The rifle has premium mil spec bolt and bolt carrier and a pistol length gas system with a low profile gas block.


Other features include a handguard with an M LOK rail, a Bravo Company Pistol Grip, a Wilson and Roger’s Super Stoc, and a Wilson Combat Tactical Trigger Unit, which is a two stage trigger with a weight of around four pounds. The rifle has an Armor Tuff finish and an MSRP of $2,500 with no sights and magazines included, great for tactical training, hunting or as an all purpose field rifle.

2: JP Enterprises ASF 20 

Based in Hugo, Minnesota, JP Enterprises isn’t as popular as some of the other rifle manufacturers on this list, but those who own a JP Enterprises rifle know that the company builds some of the best custom rifles money can buy. Their firearms are some of the most expensive but also some of the most well made in the industry.

One of their most popular models is the JP Enterprises GMR 13, a pistol caliber carbine chambered in nine mil with a range of features to meet strict law enforcement requirements, including a custom adjustable gas system, a proprietary handguard, and a proprietary adjustable buttstock. But we don’t care for pistol caliber carbines in this topic so let’s talk about their ASF 20.

The ASF 20 is available in more than a few different chamberings and has a base price of $2,499. You can configure your very own custom rifle build using JP Enteprises’ Rifle Builder on their website, but you’ll first need to register for an online account and do an email verification.

Upon logging in, you’ll be presented with a lot of tick boxes but if you’re too lazy to read through all of them, you can just keep on clicking the Next button until you get to the last page showing a breakdown of all the parts the total amount for your custom build.

JP Enterprises ASF 20 

The $2,499 base price comes standard with a ton of features. The barrel is available in several calibers but we’re only interested in .300 Blackout. It’s the company’s proprietary JP Supermatch crafted from 416R stainless steel that is air gauged, button rifled, cryogenically treated and fitted to the receiver using the company’s Thermo Fit methodology. It’s available in polished stainless or black teflon, and the muzzle can be treated with the company’s proprietary tactical muzzle brake or competition comp.

The lower is Radian Weapons’ A-DAC 15, a fully ambidextrous lower machined from 7075 T6 aluminum and paired with the company’s proprietary JP-15 upper. Both lower and upper receivers come standard with a matte black finish but Cerakote upgrade options are available. 

A Hogue pistol grip comes standard, and buttstock options include Hogue Overmolded, Magpul MOE, Magpul CTR, LUTH AR MBA 2, or a Mission First Tactical BATTLELINK. For the hand guard, options include the company’s proprietary MK III or MLOK. The gas adjustable system, operating system, and trigger system are all proprietary and a single 30 round mag is included.

1: Nemo Arms Battle Light SYN-COR 300

And finally, my Number 1 pick is again, from another firearms manufacturer that is nowhere near as popular as all the others I’ve talked about so far, Nemo Arms. They’re based in Kalispell, Montana, and only started their business 12 years ago, in 2011. 

Their customers know them for building high end, premium quality rifles, shotguns, ammo, and suppressors. Their rifles are available in a number of different calibers and in both rifle or pistol configurations, all anodized to be durable and Cerakoted to be aesthetically pleasing.

But for the purposes of this topic, we’re only interested in Nemo Arms Battle light SYN-COR chambered in .300 Blackout. With its MSRP of $3,700, it is the most expensive rifle on this list. 

It has a 17-inch barrel that has an 8 inch 5R Rifling with a 1 in 5 twist rate and is made of 4150 chromoly vanadium. This barrel has a titanium stainless hybrid monolithic suppressor core and a low profile gas block. The handguard has a 15 inch 6061 M LOK modular rail with steel QD mounts and a lightweight heat dissipating barrel nut made of 7075 T6 aluminum. 

The rifle’s upper and lower receivers are both made of billet 7075 T6 aluminum. Both are tri color anodized. It has a 6 position Mil Spec carbine receiver extension made of 7075 T6 aluminum which also includes a carbine buffer and spring. It uses a piston gas hybrid operating system which makes it run cleaner while still providing superb suppression.


The bolt carrier is made of 8620 heat treated nickel boron coating and the bolt is made of Carpenter 158, heat treated, cryo’d, shot peened, MPI’d, and nickel boron coated. Other features include thorough drilled titanium takedown and pivot pins, an ambi safety selector, an ambi charging handle made of 7075 T6 aluminum, an ambi mag release, and a mil spec forward assist. The trigger is a CMC flat bow with a 3.5 pound pull weight. 

The grip is a MAGPUL MIAD and the stock is a MAGPUL CTR mil spec. If you’re in the market for the best .300 Blackout Rifle out of the box, this $3,700 Nemo Arms Battle Light is the rifle for you.

And that’s all I have for you in this topic. If you want a topic with similar list of rifles chambered in some other cartridge, let me know in the comments.

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