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Self-contained multi-stage drop-in replacement for standard buffer and spring in .308 Win and 6.5 Creedmoor platforms with carbine-length buffer tube. 5.7oz equivalent weight, 7.09oz actual. Silent operation - spring never contacts inner wall of buffer tube. Reduces felt recoil. USA made. 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The spring is engineered to never contact the inner wall of the buffer tube, providing silent operation. The second stage activates at the rear of travel to significantly reduce felt recoil. It drops in as one unit - 7.09oz actual weight, 5.7oz equivalent." } }, { "@type": "Question", "name": "What AR-10 calibers and platforms does this fit?", "acceptedAnswer": { "@type": "Answer", "text": "The Armaspec SRS GEN4 AR-10 fits AR-10 platforms in .308 Winchester and 6.5 Creedmoor with carbine-length buffer tubes. It does not fit AR-15 platforms - see the Armaspec SMB Gen3 H2 or H3 for AR-15 builds." } }, { "@type": "Question", "name": "Is there any maintenance required before installing?", "acceptedAnswer": { "@type": "Answer", "text": "Yes - before installing, retighten the screws using either two 3/32 hex keys simultaneously (fully tightening both at the same time) or one 3/32 hex key using the hole in the rod for leverage. The screws should also be retightened every time maintenance is performed on the firearm." } }, { "@type": "Question", "name": "What Loctite comes on the SRS AR-10?", "acceptedAnswer": { "@type": "Answer", "text": "The SRS AR-10 ships with Red Loctite on the front metal stop and Blue Loctite for the bottom bumper. When reassembling after maintenance, Armaspec recommends reapplying Loctite to both locations." } }, { "@type": "Question", "name": "Can I run the SRS AR-10 with or without the buffer retainer?", "acceptedAnswer": { "@type": "Answer", "text": "Yes - the SRS can be installed with or without the buffer retainer. Most shooters run it without for ease of maintenance. Either configuration is functionally correct." } }, { "@type": "Question", "name": "Is the Armaspec SRS AR-10 made in the USA?", "acceptedAnswer": { "@type": "Answer", "text": "Yes. 100% USA made, backed by a lifetime warranty." } } ] } #pw { font-family: &';DM Sans&';, sans-serif; font-size: 15px; line-height: 1.75; } #pw, #pw * { color: inherit; } #pw p, #pw li, #pw td, #pw div, #pw span { color: #111111 !important; } #pw h1, #pw h2, #pw h3 { color: #111111 !important; } #pw strong { color: #111111 !important; } #pw a { color: #b07a28 !important; text-decoration: none !important; } #pw a:hover { text-decoration: underline !important; } /* namespace: .srsa10 */ #pw .srsa10-badge { display: inline-block !important; background: #b07a28 !important; color: #000 !important; font-size: 10px !important; font-weight: 700 !important; letter-spacing: .12em !important; text-transform: uppercase !important; padding: 3px 10px !important; border-radius: 2px !important; margin-bottom: 14px !important; 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padding: 0 !important; margin: 12px 0 0 !important; } #pw .srsa10-links li { padding: 7px 0 !important; border-bottom: 1px solid #eeeeee !important; font-size: 14px !important; } #pw .srsa10-links li:last-child { border-bottom: none !important; } #pw .srsa10-disclaimer { margin-top: 28px !important; padding-top: 16px !important; border-top: 1px solid #dddddd !important; font-size: 12.5px !important; color: #888888 !important; line-height: 1.6 !important; } Armaspec A SRS GEN4 A AR-10 A .308 / 6.5 Creedmoor A 5.7oz Equiv A USA Made A Lifetime Warranty The Armaspec Stealth Recoil Spring SRS GEN4 AR-10 is a self-contained multi-stage drop-in replacement for your standard AR-10 buffer and spring. Designed for .308 Winchester and 6.5 Creedmoor platforms with carbine-length buffer tubes, the SRS keeps the spring off the inner wall of the buffer tube entirely - silent operation, significantly reduced felt recoil, and consistent spring tension through every cycling stroke. 7.09oz actual weight. 5.7oz equivalent. Drop in where your standard buffer and spring were. No gunsmithing, no modification to the tube. See It In Action Armaspec&';s full overview and installation walkthrough for the SRS GEN4 AR-10. Why Silent Matters on an AR-10 A standard buffer spring scrapes against the inner wall of the buffer tube every time the BCG cycles. On a heavy-hitting .308 or 6.5 Creedmoor platform cycling at full energy, that friction is significant - more heat, more noise, faster spring fatigue, and less consistent spring tension over round count. The SRS eliminates spring-to-tube contact entirely. The spring rides on an internal rod, staying centered throughout the full cycling stroke. The buffer mass stays under constant tension against the bolt carrier. The second stage activates at the rear of travel to absorb the spike in recoil impulse - the part that makes .308 feel like .308. Features Silent operation - spring never contacts inner wall of buffer tube. No spring-scrape on every cycling stroke Multi-stage recoil reduction - second stage activates at rear of travel, significantly reducing felt recoil impulse on .308 and 6.5 Creedmoor platforms Buffer mass under constant tension - stays in contact with the bolt carrier throughout the cycling stroke for consistent timing Drop-in installation - replaces buffer and spring as one self-contained unit, no gunsmithing required 5.7oz equivalent / 7.09oz actual - purpose-built mass for AR-10 cycling characteristics GEN4 improvements - roll pin end piece, machined cap, ships with Red and Blue Loctite pre-applied at critical joints Lifetime warranty 100% USA made Specs System Type Multi-stage drop-in - buffer and spring self-contained Equivalent Weight 5.7oz Actual Weight (Complete) 7.09oz Length 7.18" Platform AR-10 - .308 Win and 6.5 Creedmoor, carbine-length buffer tube Loctite Red on front metal stop, Blue on bottom bumper - reapply on reassembly Buffer Retainer Compatible with or without - most users run without for easy maintenance Warranty Lifetime SKU ARM253-AR10 Country of Origin 100% USA Made Installation Pre-install screw check - retighten both screws fully using two 3/32 hex keys simultaneously, or one hex key using the hole in the rod for leverage. Do this before first install and at every maintenance interval Insert polymer bumper end (rear) toward the back of the buffer tube Insert metal weight mass end toward the bolt carrier Function check - cycle the action to verify smooth operation Loctite Note The SRS AR-10 ships with Red Loctite on the front metal stop and Blue Loctite for the bottom bumper. When reassembling after any maintenance, Armaspec recommends reapplying both. Red Loctite on the front metal stop, Blue Loctite on the bottom bumper. Frequently Asked Questions What is the Armaspec SRS GEN4 AR-10? A self-contained multi-stage drop-in replacement for your standard AR-10 buffer and spring in .308 Win and 6.5 Creedmoor platforms. The spring never contacts the inner wall of the buffer tube - silent operation and significantly reduced felt recoil. 7.09oz actual weight, 5.7oz equivalent. Drops in as one unit. What calibers and platforms does this fit? AR-10 platforms in .308 Winchester and 6.5 Creedmoor with carbine-length buffer tubes. Does not fit AR-15 platforms - see the Armaspec SMB Gen3 H2 or H3 for AR-15 builds, or the SRS GEN4 9mm for AR-9 and PCC platforms. Is there maintenance required before installing? Yes - before installing, retighten both screws fully using two 3/32 hex keys simultaneously or one hex key using the hole in the rod. Retighten at every maintenance interval. The SRS ships with Red Loctite on the front metal stop and Blue Loctite on the bottom bumper - reapply both on reassembly. Can I run this with or without the buffer retainer? Yes - with or without. Most shooters run without for ease of maintenance. Either is functionally correct. Is the Armaspec SRS AR-10 made in the USA? Yes. 100% USA made, backed by a lifetime warranty. Related Products & Resources Armaspec SRS GEN4 9mm - AR-9 / PCC Silent Recoil Spring ($69.99) Armaspec SMB Gen3 H3 - AR-15 FRT Buffer ($59.99) Armaspec SMB Gen3 H2 - AR-15 FRT Buffer ($59.99) Trigger Supply AR-10 Super Safety Lever - S7 Tool Steel ($89.99) All AR-15 Buffers for FRT Builds Best FRT Triggers for AR-15 - 2026 Buyer&';s Guide Are FRT Triggers Legal? - State-by-State Guide Install by a qualified individual familiar with the AR-10 platform. Retighten screws before installation and at every maintenance interval. It is the buyer&';s responsibility to comply with all applicable local, state, and federal laws. Armaspec SRS GEN4 is USA made and backed by a lifetime warranty.