Choose your MEGA
Choose your model, or select Not sure.
Model details (optional)
How will you mount your MEGA?
Choose rail or helmet mounting.
Included & optional accessories4 included · 2 sold separately
Included with CQ25R
-
Included
Quick-release base
ZT-AC02
-
Included
1.5 in setup riser
ZT-AC0215CQ
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Included
1.7 in setup riser
ZT-AC0217CQ
-
Included
Dovetail adapter
ZT-AC02DV
Sold separately
-
Sold separately
Lift + rearward extension
ZT-AC02CQ
-
Sold separately
Flip-to-side mount
ZT-AC03
Choose your mounting setup
Choose the parts for your setup.
Requires a compatible helmet mount or bridge; confirm its interface. ZT-AC02 is not needed.
ZT-AC03 Flip-to-Side setup
ZT-AC03 is sold separately. Choose a CQ riser or dovetail adapter below.
Help choosing a mount
Choose any mount you recognize below.
Setup visuals
1.5 in AR setup
1.5 in nominal · rail top to optical centerline
ZT-AC02 mounts directly to the rail. No extra component between base and Picatinny rail.
Two mounting methods with the CQ risers
AR Scope and Clip-on modes
Both CQ risers support AR Scope / Clip-on modes. Match optical heights for front Clip-on use.
With ZT-AC0215CQ or ZT-AC0217CQ only: flip ZT-AC02 to use the opposite face.
A · Rail fixed / Torx removal
- MEGA CQ25R
- ZT-AC0215CQ
- ZT-AC02 Face A
- TOP OF PICATINNY RAIL
ZT-AC02 stays on the rail; remove with Torx tools.
B · Adapter fixed / Assembly quick release
- MEGA CQ25R
- ZT-AC0215CQ
- ZT-AC02 Opposite face
- TOP OF PICATINNY RAIL
Fix ZT-AC02 to the riser; quick-release the whole assembly.
Connection order only, not part dimensions. Both methods apply only to ZT-AC0215CQ / ZT-AC0217CQ.
Concept illustration. Not to scale.
View full size ↗
1.7 in AR setup
1.7 in nominal · rail top to optical centerline
ZT-AC02 mounts directly to the rail. No extra component between base and Picatinny rail.
Two mounting methods with the CQ risers
AR Scope and Clip-on modes
Both CQ risers support AR Scope / Clip-on modes. Match optical heights for front Clip-on use.
With ZT-AC0215CQ or ZT-AC0217CQ only: flip ZT-AC02 to use the opposite face.
A · Rail fixed / Torx removal
- MEGA CQ25R
- ZT-AC0217CQ
- ZT-AC02 Face A
- TOP OF PICATINNY RAIL
ZT-AC02 stays on the rail; remove with Torx tools.
B · Adapter fixed / Assembly quick release
- MEGA CQ25R
- ZT-AC0217CQ
- ZT-AC02 Opposite face
- TOP OF PICATINNY RAIL
Fix ZT-AC02 to the riser; quick-release the whole assembly.
Connection order only, not part dimensions. Both methods apply only to ZT-AC0215CQ / ZT-AC0217CQ.
Concept illustration. Not to scale.
View full size ↗
DV + AC02 rail setup
DV rail setup: 1.5 in nominal · rail top to optical centerline
ZT-AC02 mounts directly to the rail. No extra component between base and Picatinny rail.
Helmet: compatible mount + DV. Rail: ZT-AC02 + DV for Scope / Clip-on.
View full size ↗
Height + rearward extension
1.5 in nominal · rail top to optical centerline
ZT-AC02 mounts directly to the rail. No extra component between base and Picatinny rail.
Concept illustration. Not to scale.
View full size ↗
Helmet use · MEGA + DV
Rail use · MEGA + DV + ZT-AC02
ZT-AC02 rail setup: Scope or Clip-on mode.
Helmet mount — DV
Helmet: compatible mount + DV. Rail: ZT-AC02 + DV for Scope / Clip-on.
View full size ↗
Compare optical center heights
One flip mount. Two nominal heights with different risers.
Shown: 1.7 in combination
MEGA CQ25R + ZT-AC03 + ZT-AC0215CQ
ZT-AC0217CQ raises the nominal optical center by 0.2 in.
Nominal assembled heights. The comparison is schematic; the product illustration shows the ZT-AC0215CQ combination.
More views
MEGA CQ25R + ZT-AC03 + ZT-AC0215CQ
Requested optical heightChoose a setup to view its height.
Optical height and alignment
Optical height and alignment
Measure from the top of the Picatinny rail.
MEGA rail-mounted assembly
H = assembled centerline height
Riser thickness is not the 1.5 / 1.7 in assembled optical height.
Day optic and clip-on height
H1 — Day-optic centerline height
H2 — Thermal centerline height
Match optical centerlines and verify the optic and clip-on interfaces.
Concept only, not to scale. Individual component offsets are unspecified.
Review your setup
Check your choices before continuing.
We will confirm compatibility before you order.
Photos and notes (optional)
Public HTTPS links, one per line (optional).
