Vltor Weapon Systems A5H3 A5 H3 Buffer 6.08 Oz

The Vltor Weapon Systems A5H3 buffer is a tuning component designed for AR-platform rifles running A5-spec receiver extensions. At 6.08 ounces, this H3-weight buffer works in concert with your choice of spring to fine-tune your rifle's recoil impulse and cycling behavior—critical when you're building or refining a rifle for a specific ammunition type, suppressor setup, or shooting discipline. Whether you're assembling a precision gun, a duty rifle, or a competition build, the right buffer weight makes the difference between reliability and reliability with control.

AR buffers don't get a lot of attention in gun-counter conversation, but they're one of the easiest performance tweaks on the platform. Heavier buffers slow bolt cycling, reduce felt recoil, and can improve reliability in guns running weak loads or suppressed fire. Lighter buffers speed things up for high-velocity ammunition or when you need faster cycling. The H3 weight puts this buffer in the middle-to-heavy range, making it popular for suppressed AR builds, precision rifles, and guns running subsonic ammunition where you want your bolt to move deliberately and predictably.

Vltor Weapon Systems has built a reputation for no-nonsense components that work—this buffer is no exception. It's a straightforward, dependable piece with no frills. If you're tuning a rifle's function or upgrading from a milspec buffer, the A5H3 gives you a proven option backed by real-world use across the shooting community.

Specifications

Frequently Asked Questions

Is this buffer compatible with standard AR-15 receivers?

No. The A5H3 is built to A5-spec dimensions and requires an A5-pattern receiver extension (also called a buffer tube or stock tube). It is not compatible with standard milspec AR-15 buffer tubes.

What's the difference between an H3 buffer and lighter or heavier options?

Buffer weight affects how fast your bolt carrier moves. An H3 is a heavier option that slows the cycling process compared to lighter buffers, which reduces recoil and can improve reliability with lower-power ammunition, suppressors, or specialty loads. Lighter buffers increase cycling speed and are used with standard or hot ammunition.

Do I need to change my spring when I switch to an H3 buffer?

That depends on your setup. Buffer and spring work together to regulate your rifle's function. Many shooters pair heavier buffers with standard springs, but the optimal combination depends on your ammunition, barrel length, and whether you're running suppressed or unsuppressed. Experimentation is common when tuning an AR platform.