RPM Precision 35mm Medium (1.00'') Scope Rings with Co-linear Bubble Level
The RPM Precision 35mm Medium scope rings with co-linear bubble level deliver precision engineering where it matters most — during setup and behind the gun. These 1.00'' medium-height rings are purpose-built for shooters who want alignment confidence without field-expedient workarounds. Whether you're dialing in a match rifle, setting up a long-range hunting rig, or building a precision AR optics platform, the integrated bubble level gives you a way to verify scope cant and ring geometry without juggling multiple leveling tools.
The co-linear bubble level design is visible from your non-dominant-eye side of the rig, so you can reference it quickly during final setup and before the shot — no fumbling for external tools or second-guessing your cant. RPM engineered these rings around the reality that accurate scope mounting starts with square geometry: the alignment lug ensures the cap and base stay in register during assembly, eliminating the drift and binding that plague routine installations.
Built from 6061-T6 aluminum ring bodies with 303 stainless steel cross bolts and nuts, these rings are made in the USA and tough enough for field use. The medium height is the workhorse choice for most setups — low enough for cowitness with many AR receivers and picatinny bases, tall enough to clear large objective housings and turrets. RPM specs straightforward torque values (18 in-lbs on cap screws, 45 in-lbs on the cross bolt) so you can bed your scope with confidence.
Key Features
- Co-linear bubble level integrated into ring body for cant verification and mounting reference
- Alignment lug ensures cap and base stay in register during installation
- 6061-T6 aluminum construction with 303 stainless steel hardware
- Medium height (1.00'') fits 35mm tubes and most modern optics setups
- USA made
- Torque specs included (18 in-lbs caps, 45 in-lbs cross bolt)
Specifications
| Tube Diameter | 35mm |
| Ring Height | Medium (1.00'') |
| Ring Body Material | 6061-T6 Aluminum |
| Fastener Material | 303 Stainless Steel |
| Weight (Medium) | 4.4 oz |
| Cap Screw Torque | 18 in-lbs |
| Cross Bolt Torque | 45 in-lbs |
| Country of Origin | USA |
Frequently Asked Questions
Will these rings fit my 35mm scope?
Yes — these rings are designed for 35mm scope tubes. The medium height accommodates most modern hunting and precision rifle optics with standard 35mm tubes.
What does the co-linear bubble level do?
The integrated level lets you verify scope cant and ring alignment during mounting without reaching for external tools. It's visible from your non-dominant side, so you can reference it quickly during setup and before the shot.
What height rings do I need?
The medium height (1.00'') is the standard choice for most rifle and AR builds. Low rings (3.9 oz) are lower-profile; high rings (5.0 oz) clear larger objectives and turret housings. Check your specific optic and base combination to confirm fit.
How tight should I torque these rings?
RPM recommends 18 in-lbs on the cap screws and 45 in-lbs on the cross bolt. Use these values with a torque wrench for consistent, safe installation.

