5.00 out of 5 based on 5 customer ratings
5 Reviews

In Stock

From: $949.00

Designed as a step up board for your more serious waves.


6' 3" x 18 1/2" x 2 5/16" (26.8L)
6' 4" x 18 5/8" x 2 3/8" (27.8L)
6' 6" x 18 3/4" x 2 7/16" (30.2L)
6' 8" x 19" x 2 1/2" (31.2L)
6' 10" x 19 1/4" x 2 9/16" (33.3L)
Quad ($25)
5 Fin ($50)
None (Select for 1-DA Exc. Epoxy orders)
White Net
Black Lines
Red Lines
Blue Lines
PU ($949)
Standard Epoxy ($1,099 up to 6' 7")
1-DA Exclusive Epoxy ($1,199 up to 6' 7")
Clear selection


The SEMI GUN is a step up board for bigger waves.

The design is based on Gav’s knowledge & experience over the last 10 years working with big wave riders.

The SEMI GUN has a foiled out tail, giving more hold and drive. As the bigger waves provide all the power, Gav has also toned down the single to double concave.


6′ 3″ x 18 1/2″ x 2 5/16″  (26.8L)
6′ 4″ x 18 5/8″ x 2 3/8″  (27.8L)
6′ 6″ x 18 3/4″ x 2 7/16″  (30.2L)
6′ 8″ x 19″ x 2 1/2″  (31.2L)
6′ 10″ x 19 1/4″ x 2 9/16″  (33.3L)

Tail Shape

Rounded Pin or Swallow

Fin Setup



See EPOXY page for full details and images.

The SEMI GUN is available in our epoxy options up to and including 6’ 7”. Simply get in touch via for a quote if you’re after 6′ 8″ or bigger.


EPS foam with wooden stringer and epoxy glassing.


Our 1-DA EXCLUSIVE EPOXY technology is the 1st composite stringer tech surfboard to WIN a WSL event! Read about it HERE.

EPS foam with special stringer, epoxy glassing, bottom stringer strip and tail patch. We use a special light composite stringer designed specifically for structures subjected to slamming and shock loads. The stringer’s composite material includes characteristics such as low water absorption, superior damage tolerance and excellent fatigue properties enhancing the surfboard’s flex.


Need some guidance about the right board for you? Take advantage of a FREE Private Consultation with our World-Class Shaper GAVIN UPSON when ordering your new 1-DA Shapes surfboard.

Appointments can be attended:

  • in person at our Tweed Heads premises; or
  • by Facebook Video Chat; or
  • by Telephone.

FREE Private Consultation – Book Here!

Additional information


6' 3" x 18 1/2" x 2 5/16" (26.8L), 6' 4" x 18 5/8" x 2 3/8" (27.8L), 6' 6" x 18 3/4" x 2 7/16" (30.2L), 6' 8" x 19" x 2 1/2" (31.2L), 6' 10" x 19 1/4" x 2 9/16" (33.3L)


Rounded Pin, Swallow

Fin Plug Setup

Thruster, Quad ($25), 5 Fin ($50)

Fin Plugs

FCSII, Futures

Tail Patch (Images Below)

None (Select for 1-DA Exc. Epoxy orders), White Net, Black Lines, Red Lines, Blue Lines

Technology Options

PU ($949), Standard Epoxy ($1,099 up to 6' 7"), 1-DA Exclusive Epoxy ($1,199 up to 6' 7")

5 reviews for SEMI GUN

  1. Warren

    Thanks Gavin, I’ve tried it a few times now and it rides like a dream, goes exactly where I want it to go, no skipping out or me having to change my foot position to get the rail over. It’s like a Ferrari compared to my other boards. Very happy.

  2. 1-DA Grom JOSH BOYLE

    I was fortunate enough to compete in the PIPELINE PRO JUNIOR earlier this year in pumping 6-10 foot waves.

    Gav shaped me a SEMI GUN where, on the smaller 6-7 foot days at Pipe, I was able to take the drop and lock into the barrel with ease.

    The SEMI GUN got me into the wave early with confidence and held its line so good. It is definitely a board that will be in my quiver next year I surf Pipe.

  3. 1-DA Team Rider J-ROD

    I’ve had many boards around the 6’6 range over the years, as it’s a real go-to board for G-Land where I’ve spent a lot of time, and numerous other solid Indo spots. Not to mention Hawaii on a medium sized day. I’ve never clicked perfectly with them. Usually they have some positives as well as drawbacks … i.e. go great in the barrel but struggle to do performance turns. It wasn’t until I got my first SEMI GUN off 1-DA that it finally happened. Gav made me a 6′ 6” and the thing is like an extension of my shortboards. The flow of the board, paddle power, barrel riding, manoeuvrability and general feel under my feet is amazing. The SEMI GUN will not fail to disappoint!

  4. Bruno

    I tried the board (SEMI GUN) today for the first time. Loved it!! It is exactly what I was looking for. Paddles really well and sticks to the face of the wave. It felt great. Gav did a great job!

  5. Brent “Hench” Hutchieson

    I love my two boards (THE ELITE and the SEMI GUN). They are so fast and responsive. When I got to my feet, it was like going on a magic carpet ride, gave me confidence to take on any wave that came my way. THE ELITE 6’ 5” went off, loved tube riding and power turns in the pocket. The SEMI GUN 6’ 10” was legendary. Needed to have bigger waves, maybe 10-15 foot. Thanks Gavin, sick boards man. Wahoo.

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