ERATAC Block m. Steyr AUG-Z Ø34/BH20/10MOA, Lever

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ERATAC Blockm. Steyr AUG-Z Ø34/BH20/10MOA, lever – one-piece block mount with quick-release lever and 10 MOA cant

When the mount is off, even a good scope becomes a factor of uncertainty.
ERATAC Blockm. Steyr AUG-Z Ø34/BH20/10MOA, lever is an ERATAC mount with adjustable quick-release lever for Picatinny/Weaver systems. It connects scope and firearm as a defined interface – focusing on height, tube diameter, clamping, and point of impact.

At ERATAC, the variant matters more than the name: tube diameter, height, cant, and clamping system must fit firearm, optic, eye relief, and use. 10 MOA creates about 29 cm angular difference at 100 m and provides a bit more elevation reserve than a neutral mount.

Important note for classification:
Before purchase, tube diameter, height, rail standard, cant, eye relief, and clamping system must match. Check before buying: Picatinny/Weaver rail, optic tube diameter, objective diameter, bolt/charging handle clearance, desired mounting height, 10 MOA cant, and whether a quick-release lever makes sense for your setup.

What makes this product technically special:
✔ One-piece block mount: maximizes stiffness through a continuous base and reduces mounting errors.
✔ Quick-release lever: useful for changing optics or transport when repeatable removal is important.
✔ High-strength aluminum / Mil-Spec Type III: structurally relevant for ERATAC mounts because mounting points must absorb recoil and clamping forces.
✔ UNIVERSAL interface: with matching T4/T5 series, accessories like bubble level, torque wrench, or adapters can be mounted close to the optic.
✔ 10 MOA cant: 10 MOA creates about 29 cm angular difference at 100 m and provides a bit more elevation reserve than a neutral mount.

Why this product?

This mount exists because the connection between glass and firearm must not be improvised. A scope must sit at the right height, not shift under recoil, and be mounted so that eye relief, stock contact, and firearm operation work. T4 GEN-2 describes not only a model series but a different operating logic: quick change, screwed permanent solution, ultralight, or T7 with ERA-Grip.

Clean optic position: height and tube diameter are chosen by variant; this prevents unnecessarily high or too low setups.

Defined clamping: quick-release lever reduces improvisation on a safety- and precision-relevant component.

Plan cant usefully: 10 MOA must fit the distance and adjustment range of the scope.

System accessories possible: depending on series, bubble level, torque wrench, or adapters can be integrated directly into the ERATAC interface logic.

Instructor tip: mounting errors start before the first shot
Never mount a scope by eye alone. First set stock contact and eye relief, then determine height and position, then align reticle and tighten screws with the correct torque. For canted mounts, first check if your scope still has enough adjustment travel down at your planned zeroing distance.
n hat. 20 MOA are useful for many long-range setups but can be unnecessary at short distances with some scopes. After every mounting: don’t just tighten, but zero in and document the point of impact. Repeatability isn’t theory – it only shows after removal, remounting, and a control shot.

Our assessment

This one-piece block mount makes sense if you don’t want to skimp on the connection between firearm and optic. It’s especially suited for setups where point of impact, mounting height, and reproducible clamping are important: precision rifles, AR10/AR15 platforms, long-range scopes, and hunting rifles with heavier optics. It’s less useful if the variant doesn’t fit the optic exactly or if you just want a simple, cheap standard mount for occasional use.

Useful for:

Precision and long-range setups with carefully chosen cant
AR and bolt-action platforms with Picatinny/Weaver rail
Hunting rifles with high-quality scopes and clear mounting height
Users who consciously select ring diameter, height, and clamping

Less useful for:

Optics with a different tube diameter than the chosen variant
Firearms without a suitable Picatinny/Weaver base
Users who don’t want to check height and eye relief
Setups where a cheaper simple mount is completely sufficient

Direct classification:
✔ ERATAC Blockm. Steyr AUG-Z Ø34/BH20/10MOA, lever: strong, if quick removal, transport, or optic change is relevant.
✔ Screw clamping: often more logical if the scope stays permanently on one firearm and tools aren’t an issue.
The right choice depends not on brand name but on tube diameter, height, cant, and clamping system.

Use scenarios

Long Range / Precision: cant and stiff mounting help to use the scope’s adjustment range effectively.

Range and Training: reproducible mounting saves troubleshooting point of impact deviations.

Hunting bolt-actions: clean height and eye relief are crucial for quick shouldering.

AR platforms: mounting height, charging handle clearance, and eye relief must work together.

Practical tip: check objective clearance and head position in real conditions
Don’t check objective clearance only dry. Dust caps, attachments, neoprene covers, or a heavier 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 can cause a floating head on classic hunting stocks.

Features & construction

Series: T4 GEN-2 – determines clamping logic, weight, and accessory interface.

Mount type: one-piece block mount – very stiff and positionally stable.

Clamping system: quick-release lever – must fit frequency of change, platform, and working style.

Cant: 10 MOA – more cant gives more elevation reserve but doesn’t replace a clean zero.

Variant logic: standard version.

Technical data

Brand: ERATAC / Recknagel – mounts and accessories made in Germany.

Product type: one-piece block mount – scope mount for Picatinny/Weaver platforms.

Clamping system: quick-release lever – determines whether speed of change or permanent screwing is prioritized.

Cant: 10 MOA – 10 MOA creates about 29 cm angular difference at 100 m and gives a bit more elevation reserve than a neutral mount.

Manufacturer / article numbers: standard: T4064-1020.

Scope of delivery

1x ERATAC Blockm. Steyr AUG-Z Ø34/BH20/10MOA, lever in chosen variant

Not included:
No scope, no Picatinny rail, no torque wrench, no level, no ZFIX, and no additional accessories. Accessories for universal or T7 interfaces are only listed as included if they are in the specific var
iante is explicitly part of the scope of delivery.

FAQ

Does this ERATAC mount fit every firearm?
No. It requires a suitable Picatinny or Weaver base and must mechanically fit the system, ejection port, charging handle, eye relief, and objective diameter.

Which height should I choose?
The height must fit the stock, optic, objective diameter, and cheek weld. Too low can cause contact with barrel or rail, too high often worsens head position.

What does the cant mean in practice?
10 MOA creates approximately 29 cm angular difference at 100 m and provides a bit more elevation reserve than a neutral mount. Important: Cant creates adjustment reserve but does not replace proper zeroing and matching ballistic data.

Do I need to re-zero after mounting?
Yes. After every mounting or change to the optic attachment, the point of impact must be checked and the firearm re-zeroed or confirmed.

When is this mount not useful?
When barrel diameter, height, cant, or clamping system do not fit your setup. A strong mount is only strong if the variant is correctly selected.

Conclusion: ERATAC Blockm. Steyr AUG-Z Ø34/BH20/10MOA, lever is a technically clean solution for users who consciously select mounting height, barrel diameter, cant, and clamping. It’s worth it if point of impact and system logic are more important than the lowest price. It’s not useful if the variant only roughly fits.