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Air Venturi Rail Lock Spring Compressor

Air Venturi Rail Lock Spring Compressor

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  • Description
  • Customer reviews
  • Q & A: 8 answered questions

Air Venturi Rail Lock Spring Compressor

  • Attaches to Dovetail/Weaver/Picatinny Rails
  • Allows user to disassemble spring and gas piston guns for maintenance/repair
  • Lightweight
  • Works with just about any spring piston powered rifle or pistol
  • Portable and compact - Just 9" long
  • Precision Machined

Air Venturi continues to innovate with products designed with the end user in mind  with the world's first portable spring compressor--the Air Venturi Rail Lock Spring Compressor!

Weighing in at only 1.5lbs this spring compressor allows airgun smiths and tinkerers to disassemble their spring or gas piston rifles anywhere they choose. The spring compressor mounts on any piston gun's scope rail, whether Dovetail, Weaver or Picatinny, and allows for the safe disassembly (relief of pre-load) of the gun - no workbench setup needed. Never before has replacing broken springs, burned out piston seals or leaking gas rams been this simple!  The Rail Lock Compressor is just one more example of Air Venturi's commitment to designing tools that reward airgunners who know their guns.

In stock

Item Code: AV-A00012 [PY-A-7764]
youTube video
See manual

other products by Air Venturi

Average Customer Review

4.5 (4 reviews)
5 star4 star3 star2 star1 star
(3 votes)(1 vote)

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5.0 5.0

5.0 5.0

By joe from USA on 2017-08-07
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0.00 ratings

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Things I liked: I like that it works. Made it easy to tune a Hugh powered gas spring rifle. Np2 and umarex fuel.

Things I would have changed: This should come with a piccatiny rail.if you plan on using it on a dovtail buy a piccatiny rail also.

What others should know: This does not work well on a dove tail. The compressor rod doesn't line up correctly. Maybe on a magnum springer with a bigger air chamber but not on a gamo or titan.

3.0 3.0

5.0 5.0

By airgunner67 from USA on 2017-08-06
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4.01 rating

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Things I liked: Strong unit, quality materials and simple operation. Does the job

Things I would have changed: A few things I would change are a vertical adjustment, centers fine on 25 mm tubes, larger tubes will be off center when compressing, needs an adjustment on a vertical plane. 2nd thing is the nylon tip needs to be on a bearing so it does not rotate with the shaft, as it is you will more than likely need to guide it with your fingers when it is off center on larger tubes which leads to the next problem, and I recommend you do this BEFORE USING IT!!! The beginning of the threads on both ends of the treaded shaft are razor sharp, upon first use I sliced the heck out of my finger guiding the tip on a RWS 350 large compression tube. Take a small flat file and deburr the start of the threads on both ends or buy some bandaids, your choice.

What others should know: A good tool but Air Venturi could make it better.


5.0 5.0

5.0 5.0

By Tim from USA on 2017-05-22
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Things I liked: I just used it to put a Vortek kit in my HW50. It clamps on the scope rail. There is a quick release button on top of the threaded shaft that releases the shaft for easy and fast use.

Things I would have changed: Nothing.


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  • Timothy from USA asked:

    Will this work on the Umerex Torq .177 cal.

    • Matthew from USA asked:

      How secure is this product on an airgun that has only an 11mm dovetail to mount it to? The video showing how to use it specifically displays it being used on a gun with an integral Weaver/Picatinny styled accessory rail, but virtually 90% of all spring airguns do not have such a rail.

      • Tyler from USA:

        The rifle used in the video has a dual rail, 11mm and picatinny. The rail used in the video was the dovetail. So as you can see from the video, it will hold just fine.

    • Norman from USA asked:

      I have 2 Benjamin air rifles one Trail NP XL nitro and one BE1500 BTW converted to nitro gas spring. My question is will the tool work since the rear plug is threaded into the tube.

      • Q from USA:

        Guess my answer got deleted, sorry for offering real world experience. But anyway, what I said was the NPXL rifles don't need a compressor, once you unscrew the end plug all the preload is taken off before it's fully unscrewed

      • Tyler from USA:

        Yes, it will work. We've used it on an NP XL here. It's all a matter of knowing how your rifle comes apart in order to properly utilize the Rail Lock. But in short, yes, it will work.

    See all discussions

    Compatible with Air Venturi Rail Lock Spring Compressor