TacFire MAR110 A2 Buffer Tube Kit, .223/5.56, Black Aluminum

Description

The TacFire MAR110 gives you the hardware to set up a rifle-length A2 fixed stock on your .223 Rem / 5.56x45mm NATO AR-15. Whether you're chasing that classic full-size rifle profile or replacing a worn-out stock system, this kit covers the guts of the recoil assembly so a standard A2 stock can bolt right on. The A2 stock itself isn't part of the package, so plan to pair it with the buttstock of your choice.

What Comes in the MAR110 A2 Kit

Inside the box you get the rifle-length buffer tube, the buffer, and a mil-spec buffer spring measuring 12.75 inches. The whole kit runs right around 11.9 ounces. The tube is finished in black to match a typical AR build, and rifle-length assemblies like this use a longer buffer and spring than a carbine setup, which is exactly why they only work with fixed A2-style stocks and not collapsible ones.

Where the TacFire A2 Buffer Tube Kit Fits Best

This is a rifle-length system built specifically for 5.56/.223 AR-15s. It shines on classic A2 and A4 style builds where you want that fixed stock feel, the longer sight radius, and the extra internal spring travel that gives full-size ARs their smooth cycling character. If you're moving over from a six-position carbine stock, keep in mind you're switching to a longer buffer system, so it's worth confirming your gas system plays nicely with the change before you commit to the build.

Getting the MAR110 Installed

Installation is straightforward for anyone who's worked on an AR lower. The tube threads into the receiver extension threads on your lower, and once the buffer and spring drop in, your A2 stock slides over the tube and secures with the stock screw. A basic set of tools and a few minutes on the bench is usually all it takes. It's a clean, no-frills way to get a dependable fixed-stock rifle up and running.