Description
Getting a modern optic onto a Browning A-Bolt WSSM can be a headache without the right base, and EGW solved that with this purpose-built one-piece Picatinny rail. It's cut specifically for the WSSM action, which Browning also labels as SSA, so it lines up with the factory scope mount holes on the receiver and bolts down clean. No drilling, no tapping, no guesswork.
What Sets the A-Bolt WSSM Rail Apart
This base is machined from domestic 6061 T6 extruded aluminum, then tumbled, sandblasted, and Type II anodized for a matte black finish that holds up to real field use. The cross slots run the full length of the rail at MIL-STD 1913 spacing, which means you can slide your rings fore and aft to dial in eye relief instead of being locked into one position. A milled center channel trims the weight down to right around two to three ounces, and in a lot of setups it won't block your factory iron sights either.
Picking the 0 MOA A-Bolt WSSM Base
The 0 MOA cant is the right call for most hunters and general shooting inside roughly 500 yards, giving you a flat, neutral platform so your scope has plenty of adjustment range left in both directions. If you're reaching way out past 500, that's where a 20 MOA base starts to make sense, but for varmint work, deer rigs, and everyday range time the 0 MOA keeps things simple. It accepts any standard Picatinny or Weaver rings, so you're free to run whatever optic fits your rifle and budget.
Mounting Your A-Bolt WSSM Scope Base
EGW includes the Torx screws and a bit in the box, so you've got what you need to get it on. They recommend snugging the screws to about 20 inch-pounds with a drop of blue Loctite to keep everything locked in under recoil. Pair it with a quality set of rings and you've got a stable, repeatable foundation that holds zero shot after shot.
Key Specifications
- Manufacturer: EGW (Evolution Gun Works)
- Manufacturer Part Number: 43300
- UPC: 841370106097
- Model: A-Bolt
- Fits: Browning A-Bolt WSSM (SSA) Action
- Calibers Covered: .223 WSSM, .243 WSSM, .25 WSSM
- Cant: 0 MOA
- Rail Type: One-Piece Picatinny
- Ring Compatibility: Picatinny or Weaver
- Material: 6061 T6 Extruded Aluminum
- Finish: Matte Black Type II Anodized
- Center Spread: 3.018 in
- Overall Length: 6.276 in
- Approximate Weight: 2 to 3 oz
- Made In: USA
What’s Included
- One-piece EGW Picatinny scope base
- #6-48 x 1/4 in Torx mounting screws
- T-10 Torx bit
Frequently Asked Questions
Which rifles does the EGW Browning A-Bolt WSSM base fit?
This base is cut for the Browning A-Bolt WSSM action, which Browning also calls the SSA. That covers the short magnum chamberings like .223 WSSM, .243 WSSM, and .25 WSSM. It does not fit the AB3, the X-Bolt, or the Mountain Titanium in .300 WSM, so it's worth confirming your rifle is a genuine A-Bolt WSSM before ordering.
Should I go with the 0 MOA or the 20 MOA A-Bolt WSSM base?
The 0 MOA version here is the right pick for most shooting inside about 500 yards, since it gives you a flat, neutral platform with plenty of scope adjustment both ways. A 20 MOA base is geared toward reaching out past 500 yards when you need extra elevation. For hunting and general range use, the 0 MOA covers the vast majority of setups.
What rings do I need for this A-Bolt WSSM scope base?
It's a standard Picatinny-style rail, so it accepts any Picatinny or Weaver scope rings. The full-length cross slots let you position your rings forward or back to nail down proper eye relief. Just match your ring height to your scope's objective size and you're set.
Does the EGW A-Bolt WSSM base come with mounting hardware?
Yes, it ships with the #6-48 Torx screws and a T-10 bit, so you have what you need to mount it. EGW suggests tightening to around 20 inch-pounds with a drop of blue Loctite to keep everything secure under recoil. It installs on the factory scope mount holes, so no drilling or tapping is required.





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