Best Glocks
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The 7 Best Glocks of 2025: [Home Defense, Concealed Carry & More]

Looking for your first Glock but not sure where to start? There’s dozens of models, calibers, and configurations, figuring out which Glock is right for you can feel like stepping into a firing range blindfolded. You’re not alone. The Glock brand has earned a reputation for reliability, simplicity, and performance across the board. Whether you’re…

ar-15 stripped lower receivers
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What is a Stripped Lower Receiver?

In order to understand what a stripped lower receiver is, we must understand what a regular lower receiver is and does. Simply put, the lower receiver is the frame that houses a few crucial firearm components: the trigger assembly, safety controls, magazine well, buffer tube, stock, and grip. Without the lower receiver, there is no…

Auto-Ordnance Trump Lower Receiver
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7 Best AR-15 Stripped Lower Receivers [2024 – All Budgets]

Finding a solid stripped lower receiver for your AR-15 build is paramount. Not only because it grants you with a greater customizable canvas to work with from the ground up, but a stripped lower is, first and foremost, your rifle’s anchor.  The materials of which your stripped LRG is constructed can greatly affect your rifle’s…

Best AR-15 Flashlights
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The 9 Best AR-15 Flashlights [2025] – Hands-On Tested

Ready to find a high-quality flashlight that can enhance your AR’s low-light visibility?  There’s a reason every rig should include a great flashlight setup: it’s a simple way to illuminate targets in the dark. The light source can be used at night to search out or identify a target, or during the day for inspecting…

CAT M4 Cleaning a BCG
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7 Best Gun Cleaning Kits + Recommended Tools to Build-Your-Own

Maintaining your AR rifle is not just about keeping it in good shape; it’s about ensuring its longevity and reliability when you need it most. The right cleaning kit is your ally in this mission, but with the plethora of options out there, choosing the best can be daunting.  But have no fear—CAT Outdoors started…

Velocity AR-15 Drop-In Triggers
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10 Best AR-15 Drop-In Triggers: Single Stage, Two Stage, Competition & More

If you’ve spent any time behind an AR-15, you know the stock trigger gets the job done—but it’s far from perfect. Heavy pulls, gritty breaks, and inconsistent resets can throw off your accuracy and slow down your follow-up shots. A drop-in trigger changes everything, offering a game-changing upgrade for shooters who want a smoother, more…

AR-15 Gas System Lengths
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AR-15 Direct Impingement vs Piston Gas Systems: What’s the Difference?

The evolution of rifle technology has been marked by significant milestones, one of which was the widespread adoption of piston-driven gas operating systems in military small arms. For decades, these systems, which channel a small portion of the gunpowder’s explosive force to cycle the weapon’s action, were the standard. They came in two primary variations:…

Best-AR-15-Barrels
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The 7 Best AR-15 Barrels to Upgrade Your Rifle in 2025

Are you planning a ground-floor build of an AR or looking to upgrade your barrel, but you’re not sure which make and model to go with? If there’s one thing we’ve learned after testing just about every AR-15 barrel under the sun—match, tactical, precision, pistol-caliber—you name it—it’s that the barrel isn’t just another piece of…

Silencer Barrel Threads

Common Thread Pitches

The list of thread dimensions below applies to factory-made barrels and contains the information published by manufacturers. This list is for informational purposes only. The muzzle thread dimensions may differ depending on the development of the product and changes in the course of its production. Although some firearms, such as AR-15 barrels, are pretty standard,…

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