Armaspec ARM253-H3 SRS-H3 Recoil Spring Silver AR-15 Gen4 ARM253-H3 UPC 810048492787
Product Description
The Armaspec SRS-H3 (ARM253-H3) is a Gen4 Stealth Recoil Spring (SRS) self-contained drop-in multi-stage recoil buffer system designed for standard carbine-length AR-15 receiver extensions. Engineered to replace standard OEM buffer and wire spring assemblies, the SRS-H3 significantly reduces felt recoil, muzzle rise, and the annoying high-frequency metallic "ping" or cheese-grater sound inside the buffer tube during cycling.
Featuring a heavy H3 equivalent weight rating (equivalent to approximately 5.4 oz), the Gen4 SRS-H3 utilizes a dual-spring architecture that absorbs bolt carrier rearward kinetic energy in two distinct stages. This heavier H3 configuration is ideal for over-gassed carbines, suppressed AR-15 builds, short-barreled rifles (SBRs), and hard-hitting calibers like .458 SOCOM, 450 Bushmaster, and 12.7x42mm, slowing down bolt unlocking for smoother ejection patterns and reduced internal wear.
Precision-machined with a stainless steel rod and silver anodized aluminum housing, the Armaspec Gen4 SRS-H3 operates without rubbing against the interior buffer tube walls—extending spring life and creating an ultra-smooth action stroke. Designed and manufactured in the USA, it provides an instant performance upgrade for hard-use and suppressed AR-15 rifles.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits standard mil-spec and commercial carbine-length buffer tubes (7" internal depth) on AR-15 platforms. (Not compatible with rifle-length fixed stock buffer tubes unless using a rifle spacer, or pistol buffer tubes under 7" internal length).
- Perform a complete firearm safety check: drop the magazine, lock the bolt rearward, and visually inspect the chamber to verify zero live rounds are present.
- Depress the buffer retainer pin inside the lower receiver and remove the existing factory buffer and wire spring from the receiver extension.
- Ensure the interior of the buffer tube is clean and free of excessive grease or debris.
- Insert the Armaspec SRS-H3 assembly rubber bumper-end first into the buffer tube until fully seated against the bottom end cap.
- (Optional) The buffer retainer pin and spring can be removed completely if desired for easier maintenance, though the SRS unit will function seamlessly with or without the pin installed.
- Reassemble upper/lower receivers and manually pull the charging handle to confirm smooth, unobstructed bolt travel and full lockup.
Key Features
- Sound Mitigation Technology: Self-contained captured design eliminates the harsh metallic spring noise ("ping") inside the buffer tube.
- Gen4 Dual-Stage Spring System: Multi-stage recoil absorption smooths bolt carrier travel and noticeably decreases felt recoil and muzzle climb.
- H3 Heavy Weight Profile (~5.4 oz equivalent): Optimized for suppressed carbines, short-barreled rifles (SBRs), over-gassed gas systems, and heavy calibers.
- No Buffer Tube Contact: Rod-guided spring orientation prevents spring coils from grinding against the internal wall of the receiver extension.
- Drop-In Installation: Direct replacement for factory AR-15 carbine buffer and spring with no special gunsmithing or permanent modifications required.
- Made in the USA: Proudly designed, engineered, and manufactured in the United States backed by Armaspec's Lifetime Warranty.
Product Specifications
- Brand: Armaspec
- Model/Series: Stealth Recoil Spring (SRS) Gen4 - H3 Heavy
- MPN / SKU: ARM253-H3
- UPC: 810048492787
- Platform Compatibility: AR-15 / AR-10 Carbine Buffer Tubes (Carbine Length)
- Equivalent Buffer Weight: H3 (~5.4 oz)
- Stage System: Dual-Stage Spring
- Main Shaft Material: Stainless Steel
- Housing Finish / Color: Silver Anodized Aluminum
- Weight: 5.4 oz
- Country of Origin: USA
