The EGW T/C Venture & Compass Long Action 20 MOA scope base gives Thompson Center rifle shooters a modern Picatinny mounting solution without the gunsmith work. If you're running a Venture or Compass in long action and want to upgrade from factory rings or swap optics without drilling and tapping, this one-piece aluminum rail bolts straight to your existing receiver holes. The 20 MOA elevation built into the base extends your long-range capability, especially useful for magnum calibers or extended-distance hunting where you'd otherwise max out your scope's elevation adjustment.
Built from 6061 T6 extruded aluminum, the base is precision-machined with full-width Picatinny slots that meet MIL-STD 1913 specs to ±0.002 inch—tight enough for repeatability, loose enough for reliable ring seating. The milled center channel reduces weight without sacrificing rigidity. Since it accepts both Picatinny and Weaver rings, you're not locked into a single ring style and can dial in your eye relief exactly where you need it. The base ships with socket head Torx screws and the wrench to install them; EGW specs 20 inch-lbs of torque and a drop of blue Loctite to keep things locked down.
If you've been hesitant about modifying a quality rifle receiver, or if you shoot multiple optics and want the flexibility to swap them fast, this base solves both problems in one piece. It's the kind of straightforward, well-engineered part that lets you focus on hunting or shooting instead of troubleshooting.
Key Features
- One-piece Picatinny rail—no drilling or tapping required
- 20 MOA elevation built in for extended-range shooting
- Bolts to factory scope mount holes on T/C Venture and Compass long-action receivers
- Accepts Picatinny or Weaver scope rings for ring flexibility
- Precision-machined 6061 T6 aluminum with milled center channel for weight reduction
- Picatinny slots gauged to MIL-STD 1913 specs (±0.002")
- Includes socket head Torx screws and installation wrench
Specifications
| Brand | EGW |
| Fit | Thompson Center Venture & Compass Long Action |
| Mount Type | One-piece Picatinny rail |
| Elevation Built-in | 20 MOA |
| Rail Standard | MIL-STD 1913 Picatinny |
| Slot Tolerance | ±0.002" |
| Material | 6061 T6 extruded aluminum |
| Ring Compatibility | Picatinny or Weaver rings |
| Installation | Bolts to factory receiver holes; Torx screws and wrench included |
| Recommended Torque | 20 inch-lbs (with blue Loctite) |
Frequently Asked Questions
Will this base fit my Thompson Center Venture or Compass?
Yes, the EGW base is designed for long-action Venture and Compass models and bolts directly to the factory scope mount holes on the receiver. No drilling or tapping needed.
What scope rings work with this base?
This base accepts both Picatinny and Weaver scope rings, so you have flexibility in ring choice and can easily swap rings or optics as your hunting or range needs change.
What does the 20 MOA elevation do?
The 20 MOA (minute of angle) built into the base tilts your scope to give you more upward elevation adjustment in the turret itself. This is especially useful for long-range hunting with magnum calibers or when shooting at extended distances where your scope alone might run out of elevation travel.
What comes in the box?
The base includes socket head Torx screws, an installation wrench, and detailed torque specs (20 inch-lbs). EGW also recommends applying a small amount of blue Loctite to the screws during installation.
