{"title":"Smith \u0026 Wesson Pistol Frame Size Guide","description":"\u003ch2\u003eSmith \u0026amp; Wesson Semi-Automatic Pistol Frame Size Guide\u003c\/h2\u003e\u003cp\u003eUnderstanding frame sizes is crucial when ordering parts for Smith \u0026amp; Wesson pistols. Unlike revolvers which have clearly defined frame sizes (J, K, L, N, X), semi-automatic pistols are categorized by generation, model series, and size variants. This guide helps you identify your pistol's frame characteristics and understand parts compatibility.\u003c\/p\u003e\u003chr\u003e\u003ch3\u003e3rd Generation Pistol Frame Sizes\u003c\/h3\u003e\u003cp\u003e3rd generation pistols (1980s-2000s with 4-digit model numbers) come in different frame sizes based on caliber and intended use:\u003c\/p\u003e\u003ch4\u003eCompact Frame (3000 Series - 9mm)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e 3904, 3906, 3913, 3914, 3944, 3953, 3954\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 8+1 rounds (single-stack)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Alloy (3904, 3914) or Stainless (3906, 3913, 3953, 3954)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Concealed carry, backup, plainclothes duty\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Compatibility:\u003c\/strong\u003e Most internal parts interchange within compact 9mm models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eFull-Size Frame (5000 Series - 9mm)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e 5903, 5904, 5906, 5943, 5944, 5946\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 15+1 rounds (double-stack)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Alloy (5904) or Stainless (5903, 5906, 5943, 5944, 5946)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Duty, service, home defense\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Compatibility:\u003c\/strong\u003e Most internal parts interchange within full-size 9mm models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e.40 S\u0026amp;W Frame (4000 Series)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e 4003, 4006, 4013, 4043, 410, 411\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.5-4 inches depending on model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 10-11+1 rounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Alloy (4003) or Stainless (4006, 4013, 4043)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Law enforcement, duty carry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Compatibility:\u003c\/strong\u003e Most internal parts interchange within .40 S\u0026amp;W models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e.45 ACP Frame (4500 Series)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e 4505, 4506, 4513, 4516, 4526, 4536, 4546, 4553, 4563, 4566, 4576, 4583, 4586\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.75-5 inches depending on model\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 7-8+1 rounds (single-stack)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Alloy (4505) or Stainless (most models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Duty, competition, personal defense\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Compatibility:\u003c\/strong\u003e Most internal parts interchange within .45 ACP models\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e10mm Frame (1000 Series)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e 1006, 1026, 1066, 1076, 1086\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 4.25-5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 9+1 rounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame Material:\u003c\/strong\u003e Stainless steel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Hunting, outdoor defense, law enforcement\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eParts Compatibility:\u003c\/strong\u003e Most internal parts interchange within 10mm models\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Larger, heavier frame than 9mm\/.40 S\u0026amp;W models to handle 10mm power\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eM\u0026amp;P Series Frame Sizes (Modern Pistols)\u003c\/h3\u003e\u003cp\u003eThe M\u0026amp;P (Military \u0026amp; Police) series uses a modular polymer frame design with three main size categories:\u003c\/p\u003e\u003ch4\u003eFull-Size M\u0026amp;P\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e M\u0026amp;P 9, M\u0026amp;P 40, M\u0026amp;P 45, M\u0026amp;P 10mm (1.0 and M2.0 versions)\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 4.25-4.6 inches depending on caliber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 17+1 (9mm), 15+1 (.40), 10+1 (.45), 15+1 (10mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Duty, home defense, competition\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Full-size grip, accessory rail, interchangeable backstraps\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompact M\u0026amp;P\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e M\u0026amp;P 9 Compact, M\u0026amp;P 40 Compact, M\u0026amp;P 45 Compact (1.0 and M2.0 versions)\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.5-4 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 12-15+1 depending on caliber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Concealed carry, off-duty carry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Shorter grip and slide than full-size\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eSubcompact M\u0026amp;P\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e M\u0026amp;P 9c, M\u0026amp;P 40c (1.0 and M2.0 versions)\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.1-3.5 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 10-12+1 depending on caliber\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Deep concealment, backup gun\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Smallest M\u0026amp;P frame, reduced capacity\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eShield Series (Slim Single-Stack)\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eModels:\u003c\/strong\u003e M\u0026amp;P Shield 9mm, M\u0026amp;P Shield .40, M\u0026amp;P Shield .45, M\u0026amp;P Shield Plus, M\u0026amp;P Shield EZ (9mm \u0026amp; .380)\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBarrel Length:\u003c\/strong\u003e 3.1-3.8 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 7-8+1 (original Shield), 10-13+1 (Shield Plus), 8+1 (Shield EZ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse:\u003c\/strong\u003e Concealed carry, everyday carry\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Slim profile, single-stack (except Shield Plus), easy-to-rack slide (EZ models)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e Shield parts are generally NOT compatible with full-size or compact M\u0026amp;P\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eParts Compatibility Between Frame Sizes\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eGeneral Rule:\u003c\/strong\u003e Parts are typically NOT interchangeable between different frame sizes, even within the same generation or series.\u003c\/p\u003e\u003ch4\u003eWhat's Frame-Specific:\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSlides\u003c\/li\u003e\n\u003cli\u003eBarrels\u003c\/li\u003e\n\u003cli\u003eFrames\u003c\/li\u003e\n\u003cli\u003eMagazines\u003c\/li\u003e\n\u003cli\u003eRecoil springs (different weights for different sizes)\u003c\/li\u003e\n\u003cli\u003eGrips (sized to frame)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eWhat May Interchange (Within Same Generation\/Series):\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eSmall internal springs (case-by-case)\u003c\/li\u003e\n\u003cli\u003eSights (if mounting system is the same)\u003c\/li\u003e\n\u003cli\u003eSome fire control parts (triggers, hammers) within same caliber\/generation\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch3\u003eHow to Identify Your Frame Size\u003c\/h3\u003e\u003col\u003e\n\u003cli\u003e\n\u003cstrong\u003eFind your model number\u003c\/strong\u003e - Stamped on the frame or slide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCheck the generation\u003c\/strong\u003e - Use our Pistol Generations Guide\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasure barrel length\u003c\/strong\u003e - Helps confirm compact vs full-size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCount magazine capacity\u003c\/strong\u003e - Single-stack vs double-stack indicates frame type\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompare to specifications above\u003c\/strong\u003e - Match your pistol to the correct category\u003c\/li\u003e\n\u003c\/ol\u003e\u003chr\u003e\u003ch3\u003eStill Need Help?\u003c\/h3\u003e\u003cp\u003eIf you're unsure about your pistol's frame size or which parts will fit, check the product description for \"Fits Models\" information, or contact us with your specific model number. We're here to ensure you get the correct part for your exact pistol.\u003c\/p\u003e","products":[],"url":"https:\/\/usagunsandgear.com\/collections\/smith-wesson-pistol-frame-size-guide.oembed","provider":"USA Guns And Gear","version":"1.0","type":"link"}