Date: 11/5/2025 3:47

Air Venturi QD Fill Port Reviews

Air Venturi QD Fill Port Protector Cap

Average Customer Review

Rating 4.54.5 (31 reviews)
2 star

The most helpful favorable review

1 of 1 people found the following review helpful:

Rating 5.05.0 5.0

Rating 5.05.0 5.0

By Michael from USA on 2018-02-10 11:11:15

Things I liked:

Fits well and tight with a snap at the.end.

Things I would have changed:

Nothing

The most helpful critical review

1 of 1 people found the following review helpful:

Rating 1.01.0 1.0

Rating 1.01.0 1.0

By Ben from USA on 2017-02-01 17:36:04

Things I liked:

It had a purpose

Things I would have changed:

Everything else...

What others should know:

I does not fit standard fittings on either my FX Impact or my Benjamin Marauder too small gets stuck and I mean stuck I thought it may have a bit of mechanical retention barley pressed it on and I guess you could hone it out but I already ruined it with a pair of pliers getting if off my marauder. Highly recomend a pass on this product.

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  • 12 Next
  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Snaps right on!

    Things I would have changed:

    Nothing except how much shipping is.Th

    What others should know:

    This will snap right on to the male foster fitting and prevent dust, dirt, et cetera from getting on the fitting. Excellent product.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Your personal, very professional, and very helpful, great products.

    Things I would have changed:

    Nothing

    What others should know:

    Awesome company.

  • Rating 4.04.0 4.0

    Rating 5.05.0 5.0

    Verified Purchase

    Things I liked:

    Looks & price.

    Things I would have changed:

    Use a slightly thicker O-ring for a tighter fit, or install a magnet inside the cap. Once installed on the fill nipple, there is about 1mm of play past the point of O-ring engagement.

    What others should know:

    Seems it would be easily knocked off during a walk/stalk hunting situation.

  • Rating 3.03.0 3.0

    Rating 3.03.0 3.0

    Things I liked:

    Good quality aluminum

    Things I would have changed:

    Needs to have looser tolerances

    What others should know:

    Seems to be well made, but both examples I bought were far too tight to be easily removed. I would look elsewhere if ease of removal is important to you.

  • Rating 4.04.0 4.0

    Rating 4.04.0 4.0

    Verified Purchase

    Things I liked:

    Fits my Benjamin Gunnar fill port.

    Things I would have changed:

    Maybe make brand specific (?)

    What others should know:

    I bought two more ,hoping to use on my Hatsan Factor & Spritech compressor . Neither fit w/o some honing inside the cap. Not all " fosters" are the same !

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Everything

    Things I would have changed:

    Nothing

    What others should know:

    Go on get some of these low costs looks great fits great

  • Rating 5.05.0 5.0

    Rating 3.03.0 3.0

    Things I liked:

    It protects the quick fill port and makes it more aesthetically pleasing.

    Things I would have changed:

    It's WAY too easy to lose!! I think I'll tie some cord around the groove of the cap and the other end around the fill port so it doesn't go missing.

    What others should know:

    Buy multiple. You're almost guaranteed to misplace it.

  • Rating 5.05.0 5.0

    Rating 4.04.0 4.0

    Things I liked:

    Perfect fit for my Gauntlet. (It's a shame that Gauntlet doesn't come with an original air port cap.)

    Things I would have changed:

    Make it a little shorter, so it will flush with the rifle stock.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Nice fit- protects from debris

  • Rating 4.04.0 4.0

    Rating 2.02.0 2.0

    Things I liked:

    Very well built valve cap. Unfortunately it cant be used for the gun I purchased it for because it can be removed without removing the compensator first.

    Things I would have changed:

    Should have an alert when buying that it may not work with some barrels configurations.

    What others should know:

    If you arent running a compensator, silencer its probably fine.

  • Rating 3.03.0 3.0

    Rating 3.03.0 3.0

    Things I liked:

    It is very difficult to remove from the fill port of my gun (2020 LCS Air Arms SK-19), and sometimes it requires a lot of force to install it. It wasn't as bad for the first couple of months but it has since become very difficult.

    Things I would have changed:

    I would do away with o-ring all together and instead use a magnet to secure the cap. At the very least change the o-ring so that it is not as difficult to remove or install.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    If you have a gauntlet you know they have a rubber type cap on the fill valve. I have had three of this tpye and lost all at the range. I have not lost one of these caps yet. I have been at the range about twenty times. I have three rifels that needed the caps.

    Things I would have changed:

    Nothing

    What others should know:

    The caps snap on and stay put.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Protects the nasal head of my Air Venturi SS Female DIN Adapter With Male Quick-Disconnect!

    Things I would have changed:

    N/A

    What others should know:

    This is a great protector for storage!

  • Rating 3.03.0 3.0

    Rating 2.02.0 2.0

    Things I liked:

    Works great on the ones it fits.

    Things I would have changed:

    Make it so it fits all of them.AOA has them with magnet & they fit all.

    What others should know:

    They won't fit on some Quick-Disconnect Male Fittings.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Verified Purchase

    Things I liked:

    Simple and affordable

    Things I would have changed:

    Nothing

    What others should know:

    Great addition to any exposed foster fitting or if your like me, the air guns that have fill probes I leave in the gun and use these caps to keep the dust out of them and my guns.

  • Rating 5.05.0 5.0

    Rating 5.05.0 5.0

    Things I liked:

    Quality

  • Rating 3.03.0 3.0

    Rating 2.02.0 2.0

    Things I liked:

    Well, it will fit, but fell off the gun into oblivion.

    Things I would have changed:

    It didn't want to stay on my Marauder. I would gently tap it once on, but never felt it lock into place.and it simply fell off the gun one day...I only had it about a week before it fell off.

    What others should know:

    spend the money and get the original equipment instead of this thing.

  • Rating 5.05.0 5.0

    Rating 1.01.0 1.0

    Things I liked:

    under trying times fast delivery

    Things I would have changed:

    cost of mailing charge which cost more than item

    What others should know:

    used Cap protector on 2220 Marauder

  • Rating 4.04.0 4.0

    Rating 5.05.0 5.0

    Things I liked:

    Seems quality made. Mine does not have the "AV" on the end like shown and is not magnetic or metal but does have an o-ring inside to keep it from falling off.

    Things I would have changed:

    Air Venturi needs to check their sizing dies because something on this quick fill port protector cap is off, it doesn't fit their Air Ventuir male quick disconnect fitting I purchased with it to use together.

    What others should know:

    Mine didn't fit the AV male quick disconnect or my LCS SK-19 fill nipple. It did fit my Joe Brancato Guppy Tank male quick disconnect. Don't know what to tell you.

  • Rating 4.04.0 4.0

    Rating 4.04.0 4.0

    Verified Purchase

    Things I liked:

    They are a nice way to keep fill ports clean.

    Things I would have changed:

    They fit some ports better than others.

    What others should know:

    They are worth the cost.

  • 12 Next

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