Tacfire Mar078S Qd End Plate Steel Black Matte Ar-15

The TacFire Mar078S QD End Plate is a US-made buffer tube cap designed to modernize your AR-15's rear end with quick-detach (QD) sling attachment capability. If you're running a tactical rifle, hunting rifle, or competition build, a quality end plate transforms how you deploy and manage a sling—no more fumbling with traditional fixed swivels or makeshift attachment points. This steel construction end plate handles both Mil-Spec and commercial buffer tube diameters, so it works with virtually any standard AR platform you're building or upgrading.

Built from solid steel and finished in black matte, the Mar078S offers a no-nonsense, durable platform for mounting quick-detach sling swivels. The matte finish resists glare and blends seamlessly with other tactical components. Whether you're setting up a precision rifle, a duty-style build, or a field gun for hunting, a QD end plate eliminates the need for permanent sling loops and lets you swap or adjust your sling setup in seconds.

Installation is straightforward on any AR-15 with a castle nut already in place—the end plate simply screws onto your existing buffer tube. It's a small upgrade that pays dividends in handling and ergonomics, especially if you're running your rifle hard or prefer the flexibility of quick-detach gear.

Key Features

• USA-made steel construction for durability and reliability
• Quick-detach (QD) socket for fast sling attachment and removal
• Compatible with both Mil-Spec and commercial buffer tubes
• Black matte finish resists glare and wear
• Straightforward installation on standard AR-15 platforms

Specifications

Frequently Asked Questions

Will this end plate fit my AR-15 buffer tube?

Yes. The Mar078S is compatible with both Mil-Spec and commercial diameter buffer tubes, covering the vast majority of standard AR-15 builds.

What kind of sling swivel attaches to this end plate?

Any quick-detach (QD) sling swivel with a standard QD socket will mount directly to the Mar078S. You'll need to source a QD swivel separately if you don't already have one.

How do I install this on my rifle?

The end plate threads onto your buffer tube where a standard end plate would sit. Your castle nut must already be installed; the Mar078S simply screws on in its place.

Is this a drop-in replacement for my existing end plate?

No. You'll need to remove your current end plate and unscrew it from the buffer tube, then install the Mar078S in its place. It's a simple job and requires no gunsmithing.