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Pros and Cons of Building Your Own 300 Blackout

300 Blackout is the next great cartridge to hit the AR-15 market and naturally, it comes with a plethora of new lowers, barrel, parts kits, and accessories so you can build your own at home. But 300 Blackout is a workhorse of many trades – should you build one at home like you’ve done with your 5.56 or AR-10? Today we’re looking at the pros and cons of building your own 300 Blackout.

 

The Pros of Building Your Own 300 Blackout

 

#1: Building your 300 Blackout is More Affordable!

Building your own 300 Blackout-chambered rifle or pistol at home means saving a bunch of cash. The 300 Blackout market is still relatively young, and that means less availability. That also means paying higher prices for a rifle or pistol that caters to a niche subset of a larger market.

 

That also means if you build your 300 Blackout at home, you’ll avoid those premiums at the gun store’s checkout counter. Where a top-tier 300 Blackout pistol could run you well over $1,000, a Complete 300 Blackout Pistol Build Kit with threaded barrel (80% lower included) will run you about half that price.

 

#2: Building a 300 Blackout Makes More Sense

300 Blackout is an interesting cartridge because it can perform so many tasks. It can function as a full-length rifle capable of hitting 500 meters, or it can act as a compact, subsonic pistol for close quarters. But enjoying these different approaches to shooting 300 Blackout means buying a rifle (or pistol) that’s hopefully been configured to get the job done the right way. Often, this means investing in a basic platform that can get both jobs to an extent, but it will likely need to be tailored to your shooting style.

 

But building a 300 Blackout means saving the time and money of making that conversion in the first place. When you piece together your 300 Blackout build you get to determine barrel length, twist rate, gas system, and what loads you want to shoot, right out of the box.

 

You don’t need to compromise at the store and pay a higher price for something you don’t want (for example, a 1:10 twist rate barrel meant for lighter loads, even though you plan on shooting exclusively heavy, subsonic loads). Building your 300 Blackout removes that compromise and added cost of buying more parts once you’ve purchased your base gun at the local shop.

The Cons of Building Your Own 300 Blackout

 

#1: You Need to do Some Research

Building a 5.56-, .223-, or .308-chambered black rifle is pretty easy. No matter what twist rate, gas system, or barrel length you opt for, the finished rifle will perform adequately to its cartridge’s advertised effective range.

 

But building a 300 Blackout that’s reliable and accurate is not so simple. You need to do some research. See, building a 300 BLK with suppressed loads and a carbine gas system will likely result in a pistol that doesn’t cycle reliably. Building a 300 BLK bench rifle with a crazy 20” barrel and 1:7 twist rate will make for a needlessly long, heavy rifle that isn’t any more accurate than a 16” barrel with a 1:10 twist rate.

 

Yes, if you want to build a 300 Blackout platform, you simply must know your stuff first. But is this really a con? We think not. We believe that in building your own AR-15 at home, you learn valuable gunsmithing and shooting skills that cannot be earned with a store-bought gun.

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