--- title: "Grand Power K100 MK12 9mm 4.25\" 15rd Black" description: "Full size 9mm pistol with a 4.25\" barrel, 15rd capacity, and rotating barrel system for smooth recoil and consistent performance." canonical_url: "https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla" meta: author: KYGUNCO "og:description": "Full size 9mm pistol with a 4.25\" barrel, 15rd capacity, and rotating barrel system for smooth recoil and consistent performance." "og:image": "https://cdn.kygunco.com/assets/products/53275/thumbnail.jpg?v=1772213643" "og:image:height": "500" "og:image:width": "500" "og:title": "Grand Power K100 MK12 9mm 4.25\" 15rd Black" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Shooting](https://www.kygunco.com/category/shooting) / [Guns](https://www.kygunco.com/category/shooting/guns) / [Handguns](https://www.kygunco.com/category/shooting/guns/handguns) / [Semi-Auto](https://www.kygunco.com/category/shooting/guns/handguns/semi-auto) / GRN-GPK100 ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/53275/main.jpg?v=1772213643) For illustration purposes only, this image may not be an exact representation of the product. # GRAND POWER K100 MK12 9mm 4.25" 15rd Black The Grand Power K100 MK12 is a full size 9mm pistol featuring a 4.25" barrel and 15rd capacity. It operates on a rotating barrel locking system designed to reduce felt recoil and support consistent cycling. Built with a polymer frame and steel slide, the K100 MK12 is suited for range use, training, or defensive applications where control and reliability are priorities. 5.0 ** ** ** ** ** [7 reviews](#reviews) $449.99 ** 5 interest-free payments of **$90** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** ![Credova logo](https://www.kygunco.com/brands/credova.svg) Pay over time with ![Credova text logo](https://www.kygunco.com/brands/credova-text.svg) ** Online In Store ** Free Shipping Enjoy delivery to the Lower 48 States at no cost. ** Ships To FFL Dealer Handled by our expert shippers in Bardstown, KY. Item # 53275 Style GRN-GPK100 Condition New Manufacturer [Grand Power](https://www.kygunco.com/brand/grand-power) Model K100 Round Capacity 15 Caliber 9mm Action Semi-Auto The K100 Mk12 is a refined SA/DA pistol engineered for versatility, making it well-suited for practical shooters and specialized military use. Its ergonomic design includes three interchangeable backstraps, allowing shooters to tailor the grip for comfort and multi-user environments. Evolving from the Mk6 and Mk7 series, the Mk12 also features a MIL-STD-1913 Picatinny rail for mounting tactical accessories. With improved handling and enhanced control, the K100 Mk12 delivers a balanced blend of precision, adaptability, and user-focused ergonomics. SPECIFICATIONS - Caliber: 9mm Luger - Trigger mechanism: Single Action / Double Action - Trigger pull weight: 4.49-5.62lbs (SA) / 7.86-8.99lbs (DA) - Overall length: 7.97 inches - Height without magazine: 5.25 inches - Width: 1.42 inches - Barrel length: 4.25 inches - Weight: 1.80lbs (Unloaded) - Interchangeable Backstraps - Magazine Capacity: (3) 15 Round Magazines ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). ## Frequently Bought Together 5.0 ** ** ** ** ** 7 reviews ** ** ** ** ** 7 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## Reviews ** Norman Ponca City, OK The Grand Power K100 is going to be a must have firearm. The fit and finish of the K100 is excellent and the standard grip feels like a CZ 75. The rotating barrel claimed to reduce felt recoil however it felt similar to other polymer frame 9mm pistols. The gun functioned flawlessly for my quick 100 round test. The pistol was accurate but did shoot a little high. Grand Power includes a plus one and a minus one front sight that is easy to change. Slamming the magazine home will cause the slide to close. This is a very fast shooting pistol with a lighter single action trigger and a very short reset. I am very pleased with this purchase of the Grand Power K100. The only downside side side is the disassembly and reassembly as it is very different than Browning rising barrel design. So just watch the video and learn. Overall you will not be disappointed 4 months ago ** ** ** ** ** ** Christopher Frankfort, KY A really good handgun that is way overlooked. I bought it due to a recent trip to IWA and learned of their reputation for their innovation and quality 6 months ago ** ** ** ** ** ** Marcos Augusta, GA Excellent features and build quality that shines through. It is the flattest smoothest 9mm I have ever shot. Gb guns was right that it feels like your shooting down a caliber smaller 7 months ago ** ** ** ** ** ** Michael Elizabethton, TN Absolutely flawless transaction… perfect… A unbelievable deal on a high quality firearm… KYGUNCO is my first choice on any firearm.. shipping included in price… no crazy add ons !!! 7 months ago ** ** ** ** ** ** James DOWNINGTOWN, PA Great price on a great pistol from one of the best firearms retailers in the business! 8 months ago ** ** ** ** ** ** Verified Customer Great service Great price For a relatively unknown gun it’s very well made and has many features I’m sure it not as popular as most other brands but i feel i got a bargain 8 months ago ** ** ** ** ** ** Verified Customer Great Product, new condition, came with 3 magazines. The single-action is crisp and short reset. 8 months ago ** ** ** ** ** ## Don't Forget Your Ammo ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#webpage","@type":"WebPage","description":"Full size 9mm pistol with a 4.25\" barrel, 15rd capacity, and rotating barrel system for smooth recoil and consistent performance.","name":"Grand Power K100 MK12 9mm 4.25\" 15rd Black","url":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla","about":{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#/schema//kygunco"},"breadcrumb":{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#breadcrumb"},"isPartOf":{"@id":"https://www.kygunco.com/#website"},"potentialAction":[{"@type":"ReadAction","target":["https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla"]}]},{"@id":"https://www.kygunco.com/#/schema/organization/kygunco","alternateName":"Kentucky Gun Company","currenciesAccepted":"USD","description":"Shop KYGUNCO for firearms, ammo, gun parts, optics, shooting accessories, and outdoor gear with online ordering and shipping options across the U.S.","email":"info@kygunco.com","foundingDate":"1946-01-01","hasMap":"https://www.google.com/maps/dir/?q=place_id:ChIJfwecWCBSaIgRguIjuoPha40","logo":"https://www.kygunco.com/logos/kygunco.svg","name":"KYGUNCO","priceRange":"$$","telephone":"+1-502-348-3594","url":"https://www.kygunco.com","@type":["Organization","LocalBusiness"],"address":{"@type":"PostalAddress","streetAddress":"401 Glenwood Drive","addressLocality":"Bardstown","addressRegion":"KY","postalCode":"40004","addressCountry":"US"},"contactPoint":{"@type":"ContactPoint","contactType":"Customer Service","telephone":"+1-502-348-3594","email":"info@kygunco.com","availableLanguage":"English","hoursAvailable":{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday"],"opens":"09:00","closes":"17:00"}},"geo":{"@type":"GeoCoordinates","latitude":37.8032518,"longitude":-85.4252895},"hasMerchantReturnPolicy":{"@type":"MerchantReturnPolicy","name":"Standard Return Policy","inStoreReturnsOffered":true,"merchantReturnDays":30,"returnPolicyCategory":"https://schema.org/MerchantReturnFiniteReturnWindow","returnMethod":["https://schema.org/ReturnByMail","https://schema.org/ReturnInStore"],"returnFees":"https://schema.org/FreeReturn","refundType":["https://schema.org/ExchangeRefund","https://schema.org/FullRefund","https://schema.org/StoreCreditRefund"],"applicableCountry":"US"},"hasOfferCatalog":{"@type":"OfferCatalog","name":"KYGUNCO Catalog","url":"https://www.kygunco.com/search"},"image":{"@id":"https://www.kygunco.com/#/schema/image/1"},"knowsAbout":["Firearms sales and transfers","FFL dealers and compliance","Optics and accessories","Outdoor and hunting equipment"],"openingHoursSpecification":[{"@type":"OpeningHoursSpecification","dayOfWeek":["https://schema.org/Monday","https://schema.org/Tuesday","https://schema.org/Wednesday","https://schema.org/Thursday","https://schema.org/Friday","https://schema.org/Saturday"],"opens":"09:00","closes":"18:00"}],"paymentAccepted":["Credit Card","Credova","Sezzle"],"sameAs":["https://x.com/kygunco","https://www.facebook.com/kentuckygunco","https://www.instagram.com/kygunco","https://www.youtube.com/@thekentuckygunco","https://rumble.com/c/KYGUNCO"]},{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#product","@type":"Product","description":"Full size 9mm pistol with a 4.25\" barrel, 15rd capacity, and rotating barrel system for smooth recoil and consistent performance.","mpn":"GPK100","name":"Grand Power K100 MK12 9mm 4.25\" 15rd Black","sku":"53275","additionalProperty":[{"@type":"PropertyValue","name":"Model","value":"K100"},{"@type":"PropertyValue","name":"Round Capacity","value":"15"},{"@type":"PropertyValue","name":"Caliber","value":"9mm"},{"@type":"PropertyValue","name":"Action","value":"Semi-Auto"}],"aggregateRating":{"@type":"AggregateRating","worstRating":1,"bestRating":5,"ratingValue":5,"reviewCount":7,"ratingCount":7},"brand":{"@type":"Brand","name":"Grand Power"},"image":["https://cdn.kygunco.com/assets/products/53275/thumbnail.jpg?v=1772213643"],"mainEntityOfPage":{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#webpage"},"offers":{"@type":"Offer","availability":"https://schema.org/OutOfStock","price":449.99,"priceCurrency":"USD","url":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla","itemCondition":"https://schema.org/NewCondition","priceValidUntil":"2027-12-30T00:00:00.000Z"},"review":[{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"The Grand Power K100 is going to be a must have firearm. The fit and finish of the K100 is excellent and the standard grip feels like a CZ 75. The rotating barrel claimed to reduce felt recoil however it felt similar to other polymer frame 9mm pistols. The gun functioned flawlessly for my quick 100 round test. The pistol was accurate but did shoot a little high. Grand Power includes a plus one and a minus one front sight that is easy to change. Slamming the magazine home will cause the slide to close. This is a very fast shooting pistol with a lighter single action trigger and a very short reset. \nI am very pleased with this purchase of the Grand Power K100. The only downside side side is the disassembly and reassembly as it is very different than Browning rising barrel design. So just watch the video and learn. Overall you will not be disappointed","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-06-29T22:30:02.6838188+00:00","author":{"@type":"Person","name":"Norman"},"inLanguage":"en"},{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"A really good handgun that is way overlooked. I bought it due to a recent trip to IWA and learned of their reputation for their innovation and quality","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-05-19T00:23:56.477482+00:00","author":{"@type":"Person","name":"Christopher"},"inLanguage":"en"},{"@type":"Review","name":"fantastic firearm","reviewBody":"Excellent features and build quality that shines through. It is the flattest smoothest 9mm I have ever shot. Gb guns was right that it feels like your shooting down a caliber smaller","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-03-29T19:16:28.2973586+00:00","author":{"@type":"Person","name":"Marcos"},"inLanguage":"en"},{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"Absolutely flawless transaction… perfect…\nA unbelievable deal on a high quality firearm…\nKYGUNCO is my first choice on any firearm.. shipping included in price… no crazy add ons !!!","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-03-26T13:46:10.8098988+00:00","author":{"@type":"Person","name":"Michael"},"inLanguage":"en"},{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"Great price on a great pistol from one of the best firearms retailers in the business!","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-03-21T00:04:57.638022+00:00","author":{"@type":"Person","name":"James"},"inLanguage":"en"},{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"Great service Great price For a relatively unknown gun it’s very well made and has many features I’m sure it not as popular as most other brands but i feel i got a bargain","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-03-19T19:58:22.7865928+00:00","author":{"@type":"Person","name":"Verified Customer"},"inLanguage":"en"},{"@type":"Review","name":"Review for GRAND POWER K100 MK12 9mm 4.25\" 15rd Black","reviewBody":"Great Product, new condition, came with 3 magazines. The single-action is crisp and short reset.","reviewRating":{"@type":"Rating","bestRating":5,"worstRating":1,"ratingValue":5},"datePublished":"2026-03-19T14:39:38.6660958+00:00","author":{"@type":"Person","name":"Verified Customer"},"inLanguage":"en"}]},{"@id":"https://www.kygunco.com/product/grand-power-gpk100-k100-mk12-9mm-4.25in-151-bla#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://www.kygunco.com","position":1},{"@type":"ListItem","name":"Shooting","item":"https://www.kygunco.com/category/shooting","position":2},{"@type":"ListItem","name":"Guns","item":"https://www.kygunco.com/category/shooting/guns","position":3},{"@type":"ListItem","name":"Handguns","item":"https://www.kygunco.com/category/shooting/guns/handguns","position":4},{"@type":"ListItem","name":"Semi-Auto","item":"https://www.kygunco.com/category/shooting/guns/handguns/semi-auto","position":5},{"@type":"ListItem","name":"GRN-GPK100","position":6}]},{"@id":"https://www.kygunco.com/#/schema/image/1","@type":"ImageObject","contentUrl":"https://cdn.kygunco.com/assets/backdrops/facade.jpg","inLanguage":"en","url":"https://cdn.kygunco.com/assets/backdrops/facade.jpg"}]} ``` ## Sitemap See the full [sitemap](https://www.kygunco.com/sitemap.md) for all pages.