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Diana 340 N-TEC Classic Air Rifle

5.04 reviewsReview, article, latest buzz
Diana 340 N-TEC.

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PY-3509-6761

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  • Description
  • Specifications
  • Customer reviews
  • Q & A: 4 answered questions
  • Diana 340 N-TEC Classic air rifle
  • German Nitrogen-Piston Technology
  • Breakbarrel
  • Single-shot
  • Rifled steel barrel
  • 2-stage adjustable, modified T06 trigger
  • 11mm optics dovetails
  • Fixed fiber optic front sight
  • Fully adjustable fiber optic rear sight
  • Anti-beartrap mechanism
  • Automatic safety
  • Ambidextrous beech stock
  • Rubber buttpad

Here are the benefits of a gas-piston powerplant:
  • Smoother cocking
  • Smoother shooting
  • No spring torque
  • No spring fatigue, even if you leave it cocked for hours
  • Functions perfectly in cold weather
  • Lasts longer than a metal spring


Made in Germany. Those three words have come to mean a lot to people looking for high-quality air guns. And Diana delivers in all areas!

While you've come to expect great quality from any gun made in Germany, you'll be delighted when you shoot the new N-TEC gas-piston powerplant and see how much smoother it is than a metal mainspring. Plus, this N-TEC rifle has the T06 trigger, which lets you customize the trigger to your liking.

Use your Diana 340 N-TEC Classic air rifle for hunting and plinking. To extract the most accuracy, mount a good-quality scope.
See manual

other products by Diana

Caliber0.22" (5.5mm)
Max Velocity800 fps
Loudness3-Medium
Barrel Length19.5"
Overall Length46.0"
Shot Capacity1
BarrelRifled
Front SightFiber Optic
Rear SightAdjustable for windage & elevation
Scopeable11mm dovetail
TriggerTwo-stage adjustable
ButtplateRubber
Suggested forSmall game hunting/plinking
ActionBreak barrel
SafetyManual
PowerplantGas-piston
FunctionSingle-shot
Body TypeRifle
Fixed/adj. powerFixed
Weight8.6 lbs
See manual

other products by Diana

Average Customer Review

5.0 (4 reviews)
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5.0 5.0

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By pelletgunlover from USA on 2015-04-09
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4.663 ratings

Things I liked: Accuracy, nice quality wood stock, easy quick to use fiber optic sights!

Things I would have changed: include a tin of RWS domed pellets

What others should know: This air rifle is expensive but worth it as the 340 produces consistant accuracy and is something worth getting and keeping!

5.0 5.0

4.0 4.0

5.0 5.0

By john from USA on 2015-04-04
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3.45 ratings

Things I liked: shot cycle is excellent

Things I would have changed: trigger adjustment - trigger is GREAT, but odd

What others should know: mine is a .22 and likes the JSB 15.89 gr.

5.0 5.0

4.0 4.0

5.0 5.0

By john from USA on 2015-03-23
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3.663 ratings

Things I liked: Easy to cock. Accurate! Mine loves the JSB 15.89gr shot cycle is excellent.

Things I would have changed: First stage of the trigger is non-existent. Having said that, it is crisp and light.

What others should know: Get one now!

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  • Matt from USA asked:

    Matt from USA: I would like to know why Diana is still opting to use the dovetail design instead of the Weaver/Picatinny. I thought the Weaver/Picatinny mount was more robust than the dovetail especially on springier and gas ram air rifles. Pump, PCP and CO2 aren't as destructive on scopes and the air rifles itself so I don't see a problem with using dovetail there.

    • Tyler from USA:

      That's a question for Diana. Many of the European manufacturers will not likely switch purely because dovetails are what they have been working with since the beginning. Thankfully, you've got options to convert it with the various UTG rail options that engage both stop pin holes on the factory dovetail. I'd check those out.

  • Benjamin from USA asked:

    I have heard that the Diana 340 N-TEC air rifles have trigger adjustment problems. Have the new owners of Diana corrected the problem for these models? I only need answers from those who really know, and not opinions.

    • Rudedawg from USA:

      Although my 340 N-Tec ownership was short lived the modified T06 trigger can be adjusted to individual owners preference. There are youtube videos for adjusting the T06 trigger but I did not bend the tab as shown on one of them. The screws are a balancing act. I removed the stock to access the mechanism allowing you to cock the trigger with a screwdriver (a video will show this). I turned the 1st stage all the way in then gently pulled the trigger. I then reset the trigger screwed the 2nd stage all the way in and backed out 1 1/2 turns pulled the trigger again. I kept playing with the 2 screws until I had a very short first stage that you could feel the stop when it got to the second stage then a light and short travel 2nd stage. When I was happy with the settings I put it back in the stock. It is a very tedious process but worked perfectly; just remember 1 screw effects the other so turn them in short increments. I adjusted one of my RWS 34 T06's this way, the other was perfect out of the box. I am very happy with the T06 trigger although it does require a lengthy procedure to get the desired results.

  • BOB from USA asked:

    What is the cocking force for this gun ?

    • Rudedawg from USA:

      The 340 N-Tec that I had was listed at 35# but the last few inches just prior to locking felt like 40#+. I am 62, in good shape and for me it was not a stretch on the 340. Only after an extended shooting period, 100 shots or so, when the barrel got down to the last few inches before locking I would tend to grab it with my other arm to assist at that point. Hope this helps, RP.

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Item Description

DIA-2169033-new [PY-3509-6761]
Diana 340 N-TEC Classic gas-piston powerplant
Caliber0.22" (5.5mm)
Max Velocity800 fps
StockBeech
GripAmbi
ColorBrown
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