Unlock Your Inner Rambo with the Fostech Binary Lower

Do you ever feel like you need to unleash your inner Rambo? Do you have a burning desire to let loose with some serious firepower? Well, my friend, you need the Fostech Binary Lower.

What is the Fostech Binary Lower?

Let me break it down for you. The Fostech Binary Lower is an AR-15 lower receiver that allows you to fire your rifle in binary mode. What does that mean? It means that you get to fire two rounds with a single trigger pull, one when you pull the trigger, and the second when you release it.

It’s like having two rounds for the price of one!

Why You Need the Fostech Binary Lower

Let’s face it. Sometimes, you just want to let it rip. You want to feel the power of your firearm, and you want to do it quickly. The Fostech Binary Lower lets you do exactly that. With its unique firing mechanism, you can empty a magazine in no time flat.

It’s like a full-auto, without the paperwork!

How it Works

The Fostech Binary Lower utilizes a patented hammer and trigger system to achieve its binary firing rate. When you pull the trigger, a round is fired as normal, but when you release the trigger, another round is immediately fired.

It’s like magic, but better!

Ease of Use

The Fostech Binary Lower doesn’t require any special training or technique. You simply pull the trigger, and the gun does the rest. It’s perfect for beginners or experienced shooters looking to have some fun and blow off some steam.

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It’s like shooting fish in a barrel, but more fun!

Legal Considerations

Before you go out and buy a Fostech Binary Lower, there are some legal considerations to keep in mind. The ATF has approved the Fostech Binary Trigger for use in semi-automatic ARs, but the use of a Binary Trigger on an AR pistol is illegal without proper registration as an SBR.

Don’t be a criminal, do your research!


The Fostech Binary Lower is easy to install and works with most AR-15 rifles. It comes in a standard AR-15 configuration and is compatible with most drop-in handguards and stocks. You don’t need any special tools or equipment to install it, and you can have it up and running in minutes.

It’s like Legos for adults!


The Fostech Binary Lower isn’t cheap, but it’s worth every penny. It retails for around $500, which may seem steep, but when you consider the fun and excitement it brings, it’s a small price to pay.

It’s cheaper than therapy!


The Fostech Binary Lower offers several advantages over traditional semi-automatic ARs. Here are just a few:

  1. Faster Firing Rate: The binary firing mechanism allows for faster firing rates, giving you the ability to empty a magazine in seconds.
  2. Improved Accuracy: The binary firing allows for minimal muzzle rise and excellent follow-up shots.
  3. Better Range Performance: With improved accuracy and faster firing rate, the Fostech Binary Lower is perfect for shooting at longer ranges.

It’s like hitting a bullseye every time!


As with any product, the Fostech Binary Lower also has its disadvantages. Here are a few to consider:

  1. Cost: As mentioned earlier, the Fostech Binary Lower is not cheap and may be cost-prohibitive for some.
  2. Legal Considerations: As also mentioned earlier, there are legal considerations to keep in mind before purchasing the Fostech Binary Lower.
  3. Ammo Consumption: The binary firing mechanism uses more ammo, which can be costly, especially if you shoot frequently.
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It’s like the saying goes, nothing good comes without a cost!

Is the Fostech Binary Lower for You?

So, is the Fostech Binary Lower for you? If you want to unleash your inner Rambo and have some fun, then yes, it’s definitely for you. If you’re looking for a more practical or tactical firearm, maybe not.

It’s like choosing between chocolate cake and carrot sticks. We all know which one is more fun!

Where to Get One

If you’re ready to get your hands on a Fostech Binary Lower, here are a few options to consider:

  • Brownells
  • GunMag Warehouse
  • Rainier Arms

It’s like a treasure hunt, but with more firepower!


In conclusion, the Fostech Binary Lower is an excellent product for those looking to have some fun and unleash their inner Rambo. It’s easy to use, quick to install, and offers a unique firing mechanism that allows for faster firing rates and improved accuracy.

It’s like having your cake and eating it too!

Helpful Table

Product Name Price Retailer
Fostech Binary Lower $500 Brownells
Fostech Binary Lower $500 GunMag Warehouse
Fostech Binary Lower $500 Rainier Arms

More Products Like This

If you’re interested in similar products, here are a few to consider:

  1. Franklin Armory BFSIII: Another binary trigger system that offers improved firing rates and accuracy, with a starting price of around $400.
  2. CMMG ANVIL: A semi-automatic AR that offers excellent accuracy and reliability, with a starting price of around $1,500.
  3. SIG Sauer MCX: A modular firearm system that offers excellent versatility and customization options, with a starting price of around $1,600.
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It’s like having a whole buffet of firearms!


  1. ATF Ruling 2018-2: https://www.atf.gov/rules-and-regulations/rulings
  2. Fostech Official Website: https://www.fostech.us/
  3. Brownells: https://www.brownells.com/
  4. GunMag Warehouse: https://gunmagwarehouse.com/
  5. Rainier Arms: https://www.rainierarms.com/