Springfield Prodigy & 2011 NITRO FIN Slide Lock Thumb Rest by Shooting Sports Innovations

6/26/2025: Kimber 2K11 confirmed drops right in.

2/19/2025:  Video added on what mods are needed for the Stealth Arms Platypus.  We are running low on Black.. I'm working that into the year..  Thanks again for the support.

THE BEST THUMB REST SLIDE STOP AVAILABLE.

PLEASE READ: Check your current slide lock for pin size.  Use caution when test fitting it before testing firing at the range.  The Nitro Fin by design fits close inside the slide lock relief of the frame; some gunsmith work may be required.

Slidelock does lock the slide back manually, but does not automatically on the last round. (Top Level Gunsmith Feature)

Machined out of one solid piece of 17-4 stainless.  In most applications, if your pin size matches....all you have to do

is slide your old slide stop out, slide this one in, and you have a thumbrest on your gun.

*Works with any 1911, 1911 Double Stack, or 2011 variants (STI Stucatto, SV Prodigy, Akai PT, etc).  6/2025: Drops in a Kimber 2k11.  With every custom-made gun, a good mock-up is needed and shown below in our instructional videos.

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 increases 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 0.1985 with a 0.001 tolerance. Longer pin to aid in removal and for wider frames.

-SLIDE TAB CALIBRATION:  We increased the height and changed its shape to not contact Grams followers.  Also put a nice radius on that tab to aid in installation.  This tab might be a little long and needs to be checked during mock up.

-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 with your weak hand?  Kiss that problem goodbye.

-Available in machined polished or black nitride coating.  

PLEASE READ: 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.