Odin Works ABS — Adjustable Buffer (Heavy) for AR-15 | Includes 3 Aluminum, 3 Stainless Steel & 1 Tungsten Weights | Model OS-ABS-AR15-HVY / OSABSAR15HVY | UPC 857116007986

Tune Your Recoil, Timing, and Reliability—Precisely

Get the exact feel you want from your AR with the Odin Works ABS Adjustable Buffer (Heavy). Purpose-built for AR-15 platforms, this modular buffer ships with seven interchangeable weights—3 aluminum, 3 stainless steel, and 1 tungsten—so you can tailor total buffer mass and reciprocating impulse to your setup. Whether you’re dialing a suppressed build, smoothing out a short-gas system, or optimizing for duty-grade reliability with hot ammo, the OS-ABS-AR15-HVY lets you fine-tune bolt velocity, dwell, cyclic rate, and perceived recoil without guesswork.

Unlike fixed H/H2/H3 buffers, the ABS system lets you mix and match internal weights to reach your sweet spot. Start light for soft-shooting comps, step up to stainless for general purpose training, or slot in tungsten for maximum control on fast strings or gassy suppressor hosts. The result: flatter tracking, fewer malfunctions, and a rifle that feels custom-tuned to you.

Key Features at a Glance

• Platform: AR-15 adjustable heavy buffer

• Modular Weight System: Includes 3 aluminum, 3 stainless steel, 1 tungsten weight

• User-Tunable Mass: Build light/medium/heavy stacks to control bolt speed, dwell, and recoil

• Improved Reliability: Helps mitigate bolt bounce, over-gassing, and erratic ejection

• Suppressor Friendly: Add mass to calm gassy suppressed setups and smooth return-to-battery

• Drop-In Fit: Installs in a Mil-Spec carbine receiver extension (buffer tube) with standard carbine spring*

• Durable Construction: Odin Works quality with serviceable internals for repeatable tuning

• Model / UPC: OS-ABS-AR15-HVY / OSABSAR15HVY • 857116007986

*Rifle-length extensions use rifle buffers/springs; verify your tube type before purchase.

Why an Adjustable Buffer Beats Fixed H-Weights

1) Precision Tuning for Any Gas System

Carbine, mid-length, short-barrel, or adjustable gas block—match buffer mass to your gas instead of compromising with a single fixed H-value.

2) Suppressors Without the Drama

Cans add backpressure. A modular buffer lets you add mass to slow the carrier, reducing harsh impulse, gas in the face, and carrier slam.

3) Better Tracking & Faster Follow-Ups

The right mass smooths the recoil cycle, helping your dot or reticle stay flatter for quicker shot-to-shot recovery.

4) Reliability With Real Ammo

Different loads = different pressure curves. Tune buffer mass to stabilize ejection, reduce bolt bounce, and improve lock-back consistency.

Example Weight Stacks (Starting Points)

Final tuning depends on barrel length, gas port, ammo, spring, and suppressor. Always confirm function at the range.

• Light / Competition: Mostly aluminum + one stainless → snappy cycling, minimal muzzle dip

• General Purpose: Balanced aluminum + stainless mix → reliable across common 5.56/.223 loads

• Suppressed / Gassy: Add tungsten and more stainless → slows bolt, softens impulse, steadies ejection

Installation Overview (Quick Guide)

1. Verify Unloaded: Remove magazine and visually/physically clear the chamber.

2. Open Receiver: Push out takedown pins and hinge upper forward.

3. Remove Old Buffer: Depress buffer retainer and lift buffer/spring free.

4. Configure Weights: Build your weight stack inside the ABS buffer per Odin’s orientation; cap securely.

5. Install: Reinsert buffer and spring; ensure the retainer captures the buffer correctly.

6. Function Check: Cycle by hand; confirm proper lock-back on an empty mag at the range. Adjust weights as needed.

Tip: Change one variable at a time (weight or spring). Log ejection angle and lock-back results for repeatability.

Pro Tuning Tips

• Start in the Middle: Begin with a balanced aluminum/stainless mix, then add mass until ejection stabilizes (~3–4 o’clock) and recoil feels right.

• Mind the Spring: Pair with a quality carbine spring (or flat-wire) in good condition; springs fatigue over time.

• Ammo Matters: Zero and function-test with your intended duty/training load, suppressed and unsuppressed if applicable.

• Watch the Signs: Over-speed carriers show forward ejection and harsh impulse; under-speed may short-stroke or fail to lock back.

Technical Specifications

• Type: Adjustable heavy buffer for AR-15

• Receiver Extension: Carbine (Mil-Spec)

• Included Weights: 3× aluminum, 3× stainless steel, 1× tungsten

• Adjustment: User-configurable internal stack (serviceable)

• Compatibility: Works with standard carbine springs and AR-15 BCGs

• Model: OS-ABS-AR15-HVY / OSABSAR15HVY

• UPC: 857116007986

Exact assembled mass depends on weight combination. Follow Odin Works orientation and torque guidance.

Frequently Asked Questions

Q: Will this work in a rifle-length buffer tube?
A: No. This is a carbine-length buffer. Rifle tubes require rifle-length buffers/springs.

Q: Do I need a special spring?
A: A quality carbine spring works for most setups. Some users prefer enhanced/flat-wire springs for longevity—re-tune buffer mass accordingly.

Q: How do I know I’ve tuned it correctly?
A: Look for reliable lock-back, consistent ejection (commonly 3–4 o’clock), and a smooth recoil impulse without bolt bounce or harsh slam.

Q: Is tungsten mandatory for suppressed?
A: Not always, but tungsten adds the most mass per slot and is helpful for high-backpressure builds.

SEO-Rich Highlights & Buyer Keywords

• Odin Works ABS adjustable buffer (heavy) for AR-15

• Includes 3 aluminum, 3 stainless, 1 tungsten weights

• Tune recoil impulse, bolt speed, cyclic rate, and reliability

• Ideal for suppressed rifles and over-gassed systems

• OS-ABS-AR15-HVY / OSABSAR15HVY, UPC 857116007986

Meta Title (SEO)

Odin Works ABS Adjustable Buffer (Heavy) — AR-15 | 3 Alu + 3 SS + 1 Tungsten Weights | OS-ABS-AR15-HVY / OSABSAR15HVY

Meta Description (SEO)

Precision-tune your AR-15 with the Odin Works ABS Adjustable Buffer (Heavy). Modular design includes 3 aluminum, 3 stainless, 1 tungsten weight for dialing recoil, bolt speed, and reliability—perfect for suppressed or gassy builds. Model OS-ABS-AR15-HVY / OSABSAR15HVY, UPC 857116007986.

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Responsible Use Reminder

After any buffer change, re-zero and function-test with your chosen ammunition (suppressed/unsuppressed). Confirm reliable lock-back, safe operation, and proper ejection before duty or competition use. Always follow firearm safety rules and manufacturer guidance.

The End