ERATAC Blockm. Steyr AUG-Z, Ø34,H20mm 10MOA,Nut – One-piece block mount with screw clamping / nut system and 10 MOA pre-cant
If the mount is not correct, even a good scope becomes a factor of uncertainty.
ERATAC Blockm. Steyr AUG-Z, Ø34,H20mm 10MOA,Nut is an ERATAC mount with screwed clamping for permanently mounted optics. It connects the scope and weapon as a defined interface – with a focus on height, tube diameter, clamping, and point of impact.
With ERATAC, the variant matters more than the name: tube diameter, height, pre-cant, and clamping system must match the weapon, optics, eye relief, and application. 10 MOA theoretically create an angular difference of approximately 29 cm at 100 m and provide slightly more elevation reserve than a neutral mount.
Important classification note:
Before purchasing, the tube diameter, height, rail standard, pre-cant, eye relief, and clamping system must match.
Before purchasing, check: Picatinny/Weaver rail, scope tube diameter, objective lens diameter, bolt/charging handle clearance, desired mounting height, 10 MOA pre-cant, and whether a screw clamping / nut system is suitable for your setup.
What makes this product technically special:
✔ One-piece block mount: maximizes rigidity through a continuous base and reduces mounting errors.
✔ Screw clamping / Nut system: useful for setups where the optic remains permanently on the weapon.
✔ High-strength aluminum / Mil-Spec Type III: structurally relevant for ERATAC mounts, as mounting points must absorb recoil and clamping forces.
✔ UNIVERSAL interface: for compatible T4/T5 series, accessories such as spirit levels, SWK or adapters can be mounted close to the optic.
✔ 10 MOA pre-cant: 10 MOA theoretically create an angular difference of approximately 29 cm at 100 m and provide slightly more elevation reserve than a neutral mount.
Why this product?
This mount exists because the connection between glass and weapon must not be improvised. A scope must sit at the correct height, must not shift during recoil, and must be mounted in such a way that eye relief, stock weld, and weapon operation function. T5 GEN-2 describes not only a model series but also a different operating logic: quick release, bolted permanent solution, ultralight, or T7 with ERA-Grip.
-
Clean optic position: height and tube diameter are selected via the variant; this prevents unnecessarily high or too low setups.
-
Defined clamping: Screw clamping / nut system reduces improvisation on a safety and precision-relevant component.
-
Plan pre-cant usefully: 10 MOA must match the distance and adjustment range of the scope.
-
System accessories possible: depending on the series, spirit levels, SWK, or adapters can be integrated directly into the ERATAC interface logic.
Instructor's Tip: Mounting errors begin before the first shot
Never mount a scope by eye alone. First, establish stock weld and eye relief, then determine height and position, then align the reticle and tighten screws with the appropriate torque.
For pre-canted mounts, first check if your scope still has enough downward adjustment travel at your planned zeroing distance. 20 MOA are useful for many long-range setups, but can be unnecessary at short distances with some optics.
After every mount: don't just tighten, but zero and document the point of impact. Repeatability is not a theory – it only shows after removal, reattachment, and a control shot.
Our assessment
This one-piece block mount is useful if you don't want to skimp on the connection between weapon and optic. It is particularly suitable for setups where point of impact, mounting height, and reproducible clamping are important: precision rifles, AR10-/AR15 platforms, long-range optics, and hunting weapons with higher optic weight. It is less useful if the variant does not exactly match the optic or if you are simply looking for a simple, inexpensive standard mount for occasional use.
Suitable for:
- Precision and long-range setups with carefully chosen pre-cant
- AR and bolt-action platforms with Picatinny/Weaver rail
- Hunting weapons with high-quality scopes and clear mounting height
- Users who consciously select ring diameter, height, and clamping
Less suitable for:
- Optics with a different tube diameter than the selected variant
- Weapons without a suitable Picatinny/Weaver base
- Users who do not want to check height and eye relief
- Setups where a cheaper, simple mount is perfectly sufficient
Direct classification:
✔ ERATAC Blockm. Steyr AUG-Z, Ø34,H20mm 10MOA,Nut: strong as a permanent set-and-forget mount with screw clamping.
✔ Quick-release lever: better if you want to regularly remove the optic or switch between setups.
The right choice depends not on the brand name, but on tube diameter, height, pre-cant, and clamping system.
Application scenarios
-
Long Range / Precision: Pre-cant and rigid mounting help to make sensible use of the optic's adjustment range.
-
Range and Training: reproducible mounting saves troubleshooting for point of impact deviations.
-
Hunting bolt-action rifles: clean height and eye relief are crucial for quick aiming.
-
AR platforms: mounting height, charging handle clearance, and eye relief must work together.
Practical Tip: Check objective clearance and head position in real terms
Do not check objective clearance only in dry conditions. Dust caps, attachments, neoprene covers, or a thicker barrel can suddenly make the seemingly sufficient distance tight.
If the mount is chosen very high, the head position changes. This can be useful with a helmet or hearing protection, but on classic hunting stocks it can lead to a "floating head".
Features & Construction
-
Series: T5 GEN-2 – determines clamping logic, weight, and accessory interface.
-
Mounting type: one-piece block mount – very rigid and positionally stable.
-
Clamping system: screw clamping / nut system – must match frequency of change, platform, and working method.
-
Pre-cant: 10 MOA – more pre-cant provides more elevation reserve, but does not replace a clean zero.
-
Variant logic: Standard version.
Technical Data
-
Brand: ERATAC / Recknagel – mounts and accessories from German manufacturing.
-
Product type: one-piece block mount – scope mount for Picatinny/Weaver platforms.
-
Clamping system: screw clamping / nut system – determines whether quick changeability or permanent screwing is prioritized.
-
Pre-cant: 10 MOA – 10 MOA theoretically create an angular difference of approximately 29 cm at 100 m and provide slightly more elevation reserve than a neutral mount.
-
Manufacturer/Item numbers: Standard: T5064-1020.
Scope of delivery
- 1x ERATAC Blockm. Steyr AUG-Z, Ø34,H20mm 10MOA,Nut in selected variant
Not included:
No scope, no Picatinny rail, no torque wrench, no spirit level, no ZFIX, and no additional accessories. Accessories for universal or T7 interfaces are only included if explicitly part of the scope of delivery for the specific variant.
FAQ
Does this ERATAC mount fit on every weapon?
No. It requires a suitable Picatinny or Weaver base and must mechanically match the system, ejection port, charging handle, eye relief, and objective lens diameter.
Which height should I choose?
The height must match the stock, optic, objective lens diameter, and shooting position. Too low can cause contact with the barrel or rail, too high often worsens head position.
What does the pre-cant mean in practice?
10 MOA theoretically create an angular difference of approximately 29 cm at 100 m and provide slightly more elevation reserve than a neutral mount. Important: Pre-cant creates adjustment reserve, but does not replace correct zeroing and appropriate ballistic data.
Do I have to re-zero after mounting?
Yes. After every mounting or change to the optic attachment, the point of impact must be checked and the weapon re-zeroed or confirmed.
When is this mount not useful?
If the tube diameter, height, pre-cant, or clamping system do not match your setup. A strong mount is only strong if the variant is correctly selected.
Conclusion: ERATAC Blockm. Steyr AUG-Z, Ø34,H20mm 10MOA,Nut is a technically clean solution for users who consciously select mounting height, tube diameter, pre-cant, and clamping. It is worthwhile when point of impact and system logic are more important than the lowest price. It is not useful if the variant only approximately fits.
