Weaver Single Rail Scope Base for AR-15 Flat-Top - Matte Black
- Type:
- Risers
- Firearm Group:
- AR Platform
- Finish-Color:
- Black
- Misc:
- Accepts All Weaver Top Mount Rings
- Mount Type:
- Picatinny Rail
- Pieces:
- 1
- Model:
- Single Rail Flat Top Tactical Mount
- Material:
- Aluminum
- Rings Included:
- No
The Weaver Single Rail Scope Base for AR-15 flat-top receivers is a straightforward, lightweight solution for mounting optics and accessories on your modern tactical or hunting rifle. Built from extruded aluminum and finished in matte black, this Picatinny-style rail base bolts directly to your flat-top upper with steel thumbscrews—no gunsmithing, no permanent drilling. It raises your line of sight by 0.870 inches, giving you the eye relief and cheek weld comfort you need whether you're running a conventional rifle scope or a red dot sight.
This single-rail design keeps unnecessary weight off your gun while maintaining full compatibility with both Picatinny and Weaver-style rings and accessories. The base arrives ready to go with mounting recesses and screws pre-drilled for STANAG-pattern rings, so you can have your scope secured and zeroed in minimal time. The streamlined profile won't interfere with your charging handle or rear sight if you keep irons as backup, and the matte black finish blends seamlessly with most AR builds.
Whether you're setting up a precision rifle, a hunting AR, or a duty gun, this Weaver base is the kind of no-frills, dependable hardware that lets your optic do the work. It's not flashy, but that's the point—solid engineering, smart engineering, the kind of mount that disappears after you bolt it on.
Key Features
- Single-rail design minimizes weight while maintaining full mounting flexibility
- Picatinny rail accepts Picatinny or Weaver-style rings and accessories
- Extruded aluminum construction with matte black finish
- Raises sight line by 0.870" for improved eye relief and cheek weld
- Steel thumbscrews with threaded studs for secure, tool-free attachment
- Pre-drilled for STANAG-pattern rings; includes mounting screws
- Designed for AR-15 flat-top (A4) receivers
Specifications
| Brand | Weaver |
| Receiver Type | AR-15 Flat-Top (A4) |
| Mount Style | Single Rail (Picatinny) |
| Material | Extruded Aluminum |
| Finish | Matte Black |
| Height Above Bore | 0.870" |
| Fasteners | Steel Thumbscrews with Threaded Steel Studs |
Frequently Asked Questions
Will this base work with my AR-15 carry handle receiver?
No, this base is designed for flat-top (A4) receivers. Weaver offers a separate version for A2 carry handle uppers that includes a sight tunnel to preserve use of factory adjustable sights.
What rings and accessories does this rail accept?
The Picatinny rail is compatible with both Picatinny-style and Weaver-style rings and accessories. The base includes mounting recesses and screws for STANAG-pattern rings.
Do I need tools to install this base on my rifle?
No. The base attaches with steel thumbscrews that turn by hand—no gunsmithing or special tools required. It mounts directly to your flat-top receiver.
How much height does this base add to my optic?
The base raises your line of sight by 0.870 inches, which improves eye relief and creates a more comfortable cheek weld for conventional scopes and electronic optics alike.

