NITRO FIN 2.0, 2011 STI/SV Slide Lock Thumb Rest

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NF 2.0
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1/16/2023 UPDATE:  So everyone is asking about the DS Prodigy and will the Nitro Fin fit.. I am going to source one soon, but based on the online pictures... It looks like the Prodigy has a custom frame pocket cut that works with only their slide stop.  That being the case, initial thoughts is the Nitro Fin will need some file work to fit that pocket.  I will make a video showing what it takes... soon...  Thanks for the support.


NITRO FIN 2.0, STI, SV, Staccato 2011, Bul.


*Every opinion of the NITRO FIN 1.0 (2012 design) was used in creating the Shooting Sports Innovations Nitro Fin 2.0.


Listed below are the main key changes.

-THUMB REST PAD REDESIGN:  It's 0.150 WIDER, This came from the USPSA Open shooters mainly.. They needed it wider to compensate for the scope mount. We understand everyone has a different thumb and it's curved, so a flatter pad angle increased the surface area.  We undercut and reduced the rear section of the pad to eliminate any discomfort shooting weak handed.

-PIN QUALITY OVERHAUL:  We changed our methods of machining the pins.  This resulted in a no taper, tighter toleranced pin. Now 0.1995 with a 0.00025 tolerance. Longer pin to aid in removal and for wider frames.

-SLIDE TAB CALIBRATION:  We increased the height and changed it's shape to not contact Grams followers.  Also put a nice radius on that tab to aid in installation.

-LOWER THUMB SHIELD:  Some reported hitting the shield when racking the slide.  We lowered it to the min height.

-REAR DETENT BLOCK:  We averaged all the frames we could measure and made a recessed block to capture your slide stop plunger.  Ever experienced the slide locking back while shooting weak hand?  Kiss that problem good bye.

-Availble in machined polished or black nitride coating.  


PLEASE READ: Check your current slide lock for pin size.  Use caution test fitting it before test firing at the range.  The Nitro Fin by design fits close inside the slide lock relief of the frame, some gun smith work may be required. The Pin size is 0.1995 Slide lock does lock the slide back manually, but does not automatically on the last round. (Top Level Gunsmith Feature)   Shooting Sports Innovations stands behind all of its products.  If you have an issue, let us know.  However, firearms are inherently dangerous and must be treated with respect at all times.  Please make sure you are fully familiar with your firearm, how to use it safely, and that you follow the four rules of firearm safety at all times.  Shooting Sports Innovations cannot and will not be held responsible for any negligent use of any firearm or Shooting Sports Innovations products.

14 Reviews Hide Reviews Show Reviews

  • 5
    Top notch

    Posted by Paul on Aug 13th 2020

    If you're looking for a better thumb rest elsewhere, you won't find it! The fit and finish on these things are top notch. Thumb placement is spot on and your thumb will never rub the slide.

  • 5
    Nitro Fin 2.0

    Posted by Derek on Aug 13th 2020

    helps to control the recoil and stabilizes the gun in your hand, run them on several guns and is a true game changer

  • 5
    Nitro fin

    Posted by Mike Holshouser on Aug 13th 2020

    I have one on my new 2011 and Tanofolio Limited pro and CZ shadow SP01 Great angle for me and allows me to have the extra control on both guns. Would purchase them again.

  • 5
    Nitro Fin 2.0

    Posted by Trace Scuderi on Aug 12th 2020

    Before this wonderful product came into my life, I had some very annoying, reoccurring issues with my shooting. My hands are very prone to sweating, adding to the fact that I live in south Florida, which made movement, recoil control, and almost anything else more difficult for me, not to mention when the gun got hot it made the lack of controllability even worse. This is when I searched the internet for a drop-in product to aid me, and luckily, I found the Nitro Fin 2.0. I knew just by the images it would solve my problems, and sure enough, I was right. The thing is, however, when it arrived in the mail (with insanely fast delivery speed), the width of the pin was too big for my DVC-3 and wouldn't fit. I let Shooting Sports Innovations know through email and they offered to take it back, along with my factory 2011 slide catch so they can machine the size of the pin to the nitro fin down so that it would match the size of the factory slide catch's and send them both back to me. Genius! I did and they had it in and out of their place in a day and had it sent back to me for free! And boy did they frickin nail it! With this nitro fin, all of my problems are solved and I perform so much better than I do when my hands are dry. I can aim down sights significantly faster, control recoil much better, transition between targets way faster, and even though I never have to do this, reload on empty even faster! Since I'm only 16 with skinny fingers, this product is only gonna get better for me over time as I thicken up. I'm a very happy customer and highly recommend this product! Just remember, when they say "custom fitting may be required", they really mean it. Not to mention, the customer service is probably the best I've seen so far. Thank you Shooting Sports Innovations!

  • 5
    Consistent Grip Achievement

    Posted by Jim Smith on Aug 12th 2020

    This product really feels natural... you can get that good consistency you need to crush that grip and blister the follow up Alpha shots. I did check the pin size and the Nitro Fin was 0.0005 bigger.. no issues at all. LOVE IT!!!

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