66 in stock

Rated 4.82 out of 5 based on 11 customer ratings
(11 customer reviews)

Only Fits:

  • Calibers: 9 / 40 / 357
  • Frames: Subcompact Only
  • Grip: Small without rail or Medium with rail


  • Every Day Carry
  • Tactical


  • Tolerant of repeated dropping
  • Added weight aids in magazine release
  • Made from 6061 Aluminum
  • 1.0 oz
  • Hard Coat Anodizing
  • Made in USA

66 in stock

SKU: 320 Pinky Categories: ,


An improvement over the polymer OEM base pad, our P320 Subcompact Pinky Extension is machined out of 6061 aluminum. They are much more tolerant of being dropped on rocky or cement surfaces for heavy tactical or training use. The added weight of these base pads also aids the magazine in dropping free from the magazine tunnel for rapid and consistent reloads. The extended magazine gives the shooter a more robust grip. Great for big hands or those shooters wanting a full grip for their Subcompact Sig Sauer P320.

Additional information

Weight 0.07 lbs
Dimensions 2 × 1 × 1 in


  1. Rated 5 out of 5

    rhag2 (verified owner)

    Just received my pinky mag extensions yesterday. Very pleased. They fit perfectly. Easy to install and best of all, they are the perfect length to allow my pinky to grip the weapon without causing a larger imprint in the carry positoipn. An elegant solution to a vexing problem. Highly recommend these quality made mag extensions!

  2. Rated 5 out of 5

    ghm777 (verified owner)

    FAR and away the best available product I have come across to fill this need. Allows for a much more secure grip on the weapon without meaningfully increasing the footprint while carrying concealed. Super easy to install (did three mags in less then 5mins) and the subtle texture to the aluminum provides a great grip, really makes it feel like the larger compact-sized version when firing. Just a great product that I’ll definitely be recommending to other P320 SC carriers.

  3. Rated 5 out of 5

    Ryan Watson (verified owner)

    Exactly the right amount of extra grip. Doesn’t add extra bulk or print more when carrying concealed. And it adds just enough extra weight on the mag, that they “jump” out of the gun when you hit the mag release. I put them on all my sc mags.

  4. Rated 5 out of 5

    Jim (verified owner)

    This pinky extension base plate is fanominal. It makes the subcompact gun feel so much better in the hand. The base plate feels solid and should last a long time. Highly recommended.

  5. Rated 5 out of 5

    Richard (verified owner)

    Just received my pinky extensions for my P320 .40 subcompact. The added leverage your pinky gets, helps get and keep your grip high into the beavertail. I was really surprised how much it improved my grip and reduced recoil. An added bonus…I never viewed the subcompact version with the rounded trigger guard as sexy looking as the compact or fullsize. These pinky extensions give it back a lot of that sexy…has sort of a P365 look to it. Worth every penny!

  6. Rated 5 out of 5

    Frank (verified owner)

    Pinky extension is the perfect addition to my 320 subcompact. I had some difficulty fitting it on, which was my problem, not a design problem. I called and a gentleman, Wade, was helpful and patient as he walked me through the process. I am medium build with medium to large size hands, and the pinky extension is just perfect.

  7. Rated 5 out of 5


    Great product. Called and spoke to customer service prior to ordering. They were very helpful! Fit and finish of the subcom base plate was excellent. Installed fairly easy (tolerance was tight). Gives you the pinky grip without extra printing with IWB holsters. Have already recommended it to several others.

  8. Rated 4 out of 5

    Paul Strickland (verified owner)

    I’ve loved everything I’ve purchased from OA so far … all good stuff. Just ordered 5 of the pinky rest base pads for my 320 sub. I sure hope they’re as good as advertised and reviewed. Kinda pricey for base pads … I only paid $24.00 a piece for my three extra magazines. But I do need them as I have big mitts and really do need the extra grip space. I’ll write a review of them after install and a range day …. fingers crossed.

  9. Rated 4 out of 5

    Paul Strickland (verified owner)

    OK … got them (fast service!) easy to install, tight tolerances but that’s a good thing. Perfect fit and finish. These are great improvement to the gripping of the gun. I really do like them …..but ….I still can’t figure out the cost, when the full size 320 base pads for my 320 Compact were $11.00 cheaper per pad and $5.00 more than I paid for the magazines. Still….I love them … but now I can’t afford as much ammo! 🙁

  10. Rated 5 out of 5

    h-k-fam (verified owner)

    Just received my mag extension for my Sig 320 sub compact. Excellent fit,easy to attach, and very controllable when shooting rapid fire.

  11. Rated 5 out of 5

    jraceunlocks (verified owner)

    I just want to say Thank You! The pinky extensions are better than I imagined by reading all the online reviews. I’m very glad I went with you because you made it out of aluminum not 3D printed plastic.
    These are making an awesome Christmas gift!

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