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Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer

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$59.99

TL;DR Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer - $59.99, Weapon Care & Accessories, in stock. { "@context": "https://schema.org/", "@type": "Product", "name": "Armaspec SMB Gen3 H3 Sound Mitigation Buffer — S...

{ "@context": "https://schema.org/", "@type": "Product", "name": "Armaspec SMB Gen3 H3 Sound Mitigation Buffer — Silent Captured AR-15 Buffer", "description": "The Armaspec Sound Mitigation Buffer Gen3 H3 is a single-stage captured drop-in replacement for your standard AR-15 buffer and spring. Silent operation, adjustable spring tension, 5.6 oz equivalent weight. Recommended for forced reset trigger builds, suppressed AR-15s, and Super Safety builds. $59.99. Lifetime warranty. 100% USA made.", "image": [ "https://cdn.shopify.com/s/files/1/0646/2282/1621/files/SMB-AR-15-H3-Buffer-armaspec.jpg?v=1780620321", "https://cdn.shopify.com/s/files/1/0646/2282/1621/files/Sound_midigation_buffers_H3_heavy_AR-15_buffer.jpg?v=1780620321" ], "url": "https://www.artakedowntool.com/products/armaspec-smb-gen3-h3-silent-captured-buffer-frt", "sku": "ARM258-H3", "brand": { "@type": "Brand", "name": "Armaspec" }, "offers": { "@type": "Offer", "priceCurrency": "USD", "price": "59.99", "availability": "https://schema.org/InStock", "url": "https://www.artakedowntool.com/products/armaspec-smb-gen3-h3-silent-captured-buffer-frt", "seller": { "@type": "Organization", "name": "The Takedown Tools" } } } { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "Is the Armaspec SMB Gen3 H3 compatible with forced reset triggers?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The SMB Gen3 H3 has an equivalent weight of 5.6 oz — well above the H2 minimum and H3 recommended threshold for forced reset trigger builds on AR-15 platforms. It is the recommended weight for suppressed builds, short-gas systems, and any carbine running under 16 inches with a forced reset trigger or Super Safety." } }, { "@type": "Question", "name": "What is the difference between the SMB Gen3 H2 and H3?", "acceptedAnswer": { "@type": "Answer", "text": "Both are the same silent captured system. The H2 has a 4.7 oz equivalent weight — the minimum threshold for FRT builds. The H3 has a 5.6 oz equivalent weight — recommended for suppressed builds, short-gas systems, or any AR-15 with a forced reset trigger that needs more cycle control. If in doubt, H3 is the safer choice for FRT reliability." } }, { "@type": "Question", "name": "What is the actual weight vs equivalent weight of the H3 SMB?", "acceptedAnswer": { "@type": "Answer", "text": "The complete H3 SMB system weighs 6.71 oz actual. The equivalent weight — the effective cycling weight for buffer timing — is 5.6 oz, matching the H3 threshold recommended for forced reset trigger and suppressed AR-15 builds." } }, { "@type": "Question", "name": "Does the SMB Gen3 H3 come with a lifetime warranty?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The Armaspec SMB Gen3 H3 includes a lifetime warranty and is 100% USA made." } }, { "@type": "Question", "name": "Can I adjust the spring tension on the SMB Gen3 H3?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. The main spring can be trimmed at 0.25 lbs per coil to reduce tension, up to a maximum of 12 coils. This allows you to fine-tune the buffer system to your specific gas system, barrel length, and ammo without swapping buffers." } } ] } .smb3 { font-family: inherit; color: #111; line-height: 1.65; } .smb3 h2 { font-size: 18px; font-weight: 700; margin: 28px 0 10px; padding-top: 28px; border-top: 1px solid #e8e8e8; letter-spacing: .3px; } .smb3 h2:first-child { margin-top: 0; padding-top: 0; border-top: none; } .smb3 h3 { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: 1.5px; color: #cd7f2e; margin: 20px 0 8px; } .smb3 p { font-size: 14px; color: #444; margin-bottom: 12px; line-height: 1.7; } .smb3 ul { padding-left: 0; list-style: none; margin: 0 0 14px; } .smb3 ul li { font-size: 14px; color: #444; padding: 7px 0 7px 20px; border-bottom: 1px solid #f0f0f0; position: relative; } .smb3 ul li::before { content: '▸'; color: #cd7f2e; position: absolute; left: 0; } .smb3 .spec-table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 14px; } .smb3 .spec-table th { background: #f8f8f8; font-weight: 600; text-align: left; padding: 8px 12px; border: 1px solid #e8e8e8; color: #111; width: 40%; font-size: 13px; } .smb3 .spec-table td { padding: 8px 12px; border: 1px solid #e8e8e8; color: #444; } .smb3 .spec-table tr:nth-child(even) td { background: #fafafa; } .smb3 .note { background: #fff8f0; border-left: 3px solid #cd7f2e; padding: 10px 14px; margin: 14px 0; font-size: 13px; color: #7a5520; border-radius: 0 3px 3px 0; line-height: 1.6; } .smb3 .frt-callout { background: #f0faef; border-left: 3px solid #1a7a1a; padding: 10px 14px; margin: 14px 0; font-size: 13px; color: #1a5a1a; border-radius: 0 3px 3px 0; line-height: 1.6; } .smb3 .warn { background: #fff5f5; border-left: 3px solid #c84a4a; padding: 10px 14px; margin: 14px 0; font-size: 13px; color: #8a2020; border-radius: 0 3px 3px 0; line-height: 1.6; } .smb3 .value-bar { background: #111; color: #fff; padding: 12px 16px; border-radius: 3px; margin: 16px 0; font-size: 13px; font-weight: 600; text-align: center; letter-spacing: .5px; } .smb3 .value-bar span { color: #cd7f2e; } .smb3 .compare-table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 13px; } .smb3 .compare-table th { background: #111; color: #fff; padding: 9px 12px; text-align: left; border: 1px solid #333; font-size: 13px; font-weight: 600; } .smb3 .compare-table th.accent { background: #cd7f2e; } .smb3 .compare-table td { padding: 8px 12px; border: 1px solid #e8e8e8; color: #444; vertical-align: top; } .smb3 .compare-table tr:nth-child(even) td { background: #fafafa; } Overview The Armaspec Sound Mitigation Buffer™ Gen3 (SMB™) H3 is a single-stage captured drop-in replacement for your standard AR-15 buffer and spring. Silent operation. Adjustable spring tension. H3 weight — the recommended threshold for forced reset trigger builds, suppressed AR-15s, and short-gas platforms. Lifetime warranty. 100% USA made. $59.99. If you're running a forced reset trigger or Super Safety on a suppressed rifle, a short-gas or sub-16" build, or any platform that demands maximum cycle control — the H3 SMB Gen3 is the buffer. More mass than the H2 minimum, silent captured operation, and fully adjustable spring tension at the same $59.99 price point. $59.99 · H3 Heavy Weight (5.6 oz eq.) · Silent Captured System · Lifetime Warranty · 100% USA Made FRT & Super Safety Recommended: The SMB Gen3 H3 at 5.6 oz equivalent weight exceeds both the H2 minimum and the H3 recommended threshold for reliable forced reset trigger and Super Safety operation on AR-15 platforms. It is especially recommended for suppressed builds, short-gas systems, and any forced reset trigger build where maximum cycle control is required. Works with the Partisan Disruptor FRT, AS Designs ARC-Fire V2, Hoffman Tactical Super Safety, and any other drop-in forced reset system on a standard AR-15 platform. Specifications Product Sound Mitigation Buffer™ Gen3 — H3 SKU ARM258-H3 System Type Single-stage captured drop-in — buffer + spring + guide rod Actual Weight (Complete) 6.71 oz Equivalent Weight 5.6 oz (H3) Spring Adjustment Trimmable at 0.25 lbs per coil — max 12 coils Platform AR-15 — standard carbine buffer tube FRT Compatible Yes — exceeds H3 recommended threshold Super Safety Compatible Yes Suppressed Build Compatible Yes — recommended for suppressed FRT builds Patent Pat. Pend. Warranty Lifetime Origin 100% USA Made Price $59.99 What's Included 1x Polymer base guide rod 1x Adjustable main spring 1x H3 weight buffer Features Single-stage captured system — buffer, spring, and guide rod drop in as one unit H3 equivalent weight (5.6 oz) — recommended for forced reset trigger builds, suppressed builds, and short-gas platforms Silent operation — spring rides on polymer guide rod, eliminating metal-on-tube contact noise Reduces felt recoil — greater mass for smoother, more controlled deceleration and return Adjustable spring tension — trim at 0.25 lbs per coil, up to 12 coils maximum Drop-in replacement — no gunsmithing, no modification to lower or buffer tube Lifetime warranty 100% USA made H2 vs H3 — Which SMB Do You Need? SMB Gen3 H2 SMB Gen3 H3 (This Product) Equivalent Weight 4.7 oz 5.6 oz FRT Threshold Minimum viable Recommended Suppressed Builds Marginal Yes — recommended Short Gas / Sub-16" May need tuning Recommended Standard Carbine 16" Works well Works well — more margin Price $59.99 $59.99 Not sure which to choose? Go H3. At the same price, more buffer weight gives you more margin for reliable forced reset trigger function — especially as your round count climbs and component wear starts to affect timing. The H3 is the safer long-term choice for any FRT or Super Safety build. Why Silent Matters on a Forced Reset Trigger Build A standard buffer spring scrapes against the inner wall of the buffer tube every time the BCG cycles. On a forced reset trigger or Super Safety build — where cycling rates are significantly higher than standard semi-auto fire — that friction compounds. More cycles per second means more heat, more noise, and faster spring fatigue. The SMB Gen3 eliminates spring-to-tube contact entirely. The polymer guide rod centers the spring throughout the cycling stroke, front and back, keeping metal off metal. The result is quieter operation, less heat in the tube, and a spring that maintains consistent tension through higher round counts — which means more consistent timing for your forced reset trigger reset cycle. At $59.99 with a lifetime warranty, the H3 SMB Gen3 is the best value heavy buffer available for any forced reset trigger or Super Safety build on an AR-15 platform. Installation Insert polymer base with guide rod into the buffer tube Insert the spring onto the guide rod Insert the buffer over the spring No tools required. Drop-in replacement for any standard AR-15 carbine buffer tube setup. Related Products & Resources Armaspec SMB Gen3 H2 Silent Captured Buffer — $59.99 Odin Works HFRT All-In-One Buffer System — $79.99 Odin Works H-FRT9 — AR9 / 9mm Blowback Buffer — $79.99 H2 Heavy Buffer 4.6 oz — V2 Reciprocating H3 Heavy Buffer 5.4 oz Tungsten — V2 Reciprocating Partisan Disruptor FRT — AR-15 Forced Reset Trigger ($299.99) The LAT — 3-Position Match Grade FRT ($374.99) Partisan Disruptor Ambi FRT — SBW Selector ($324.99) Hoffman Tactical Super Safety AS Designs ARC-Fire V2 All AR-15 Buffers for FRT Triggers FRT Resources Best FRT Triggers for AR-15 — 2026 Buyer's Guide Best Buffer for Forced Reset Trigger AR-15 Builds Odin Works Buffers — FRT & Super Safety Guide Are FRT Triggers Legal? State-by-State Guide FRT vs Super Safety — What's the Difference? FRT Blog — Tips, Guides & News

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