Odin Works Adjustable AR-15 Lite Buffer — 2.1–4.2 oz · Competition & Lightweight Builds

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align-items: flex-start !important; } } ✓ 100% USA Made ✓ Odin Works ✓ Southern Idaho ✓ 2.1–4.2 oz Range ✓ 7 Adjustable Weights ✓ AR-15 Mil-Spec ✓ In Stock 🇺🇸 ODIN Works · Southern Idaho — 100% USA Made Aluminum body · 7 interchangeable weights · Mil-spec AR-15 carbine tube compatible Not every AR-15 build needs to go heavy. Competition shooters, lightweight builds, and overgassed rifles need a buffer solution that goes in the other direction — lighter, faster, and just as precisely tuned. The Odin Works Adjustable AR-15 Lite Buffer gives you a 2.1 to 4.2 oz range with 7 interchangeable weights — 3 aluminum, 3 stainless steel, and 1 tungsten — in an aluminum body built for speed-focused AR-15 builds. One buffer. Every configuration from featherweight competition to H2 equivalent. 100% USA made in Southern Idaho. Weight System 3 Weight Types. 7 Combinations. AL Aluminum × 3 Lightest — competition, light loads, over-gassed systems SS Stainless × 3 Mid-weight — general purpose, standard mil-spec loads W Tungsten × 1 Heaviest — max weight for the lite platform at 4.2 oz 2.1 oz Min — 3× AL Lightest possible. Competition loads, over-gassed builds. 2.8 oz 2 AL + 1 SS Light-medium. Standard competition carbine builds. 3.0 oz Carbine Equiv. Standard carbine weight. Mil-spec starting point. 3.5 oz H1 Range 1 AL + 2 SS. Standard defensive and duty weight. 4.2 oz Max — H2 Equiv. 2 SS + 1 Tungsten. Max lite weight. FRT minimum threshold. Lite vs. Heavy — Which Do You Need? The Lite buffer covers 2.1–4.2 oz — ideal for competition builds, lightweight AR-15s, overgassed rifles, and shooters who run lighter loads. The Heavy buffer covers 3.7–5.8 oz — required for forced reset triggers, suppressed builds, pistol-length gas, and high-pressure loads. If you're running an FRT like the Disruptor or ARC-Fire V2, you need the Heavy. If you're building a lightweight competition or 3-Gun rifle, the Lite is your answer. Key Features Built for Speed and Precision ◆Aluminum body — lightweight construction keeps your build as light as possible while still giving you tuning flexibility. Significantly lighter than the steel-body Heavy version. ◆7 interchangeable weights — 3 aluminum, 3 stainless steel, 1 tungsten. Choose any 3 for your configuration. Load any combination via the face-mounted set screw — no punches, no roll pins. ◆2.1 to 4.2 oz range — from the lightest competition weight all the way to H2 equivalent. Covers every lightweight AR-15 configuration in a single buffer body. ◆Competition and 3-Gun optimized — the 2.1 oz minimum weight allows your AR-15 to cycle light competition loads that would short-stroke in a heavier buffer. Run lighter ammo without reliability issues. ◆Over-gassed rifle solution — if your AR-15 runs rough, beats up brass, or has excessive muzzle rise with factory ammo, you're likely over-gassed. Dropping to a lighter buffer slows the cycle and smooths out the action. ◆Set screw adjustment — swap weights in seconds from the front of the buffer. No disassembly, no special tools. Change your configuration at the range between stages. ◆Mil-spec carbine tube compatible — drop-in installation in any standard mil-spec AR-15 carbine buffer tube. No modification required. ◆100% USA made — designed and manufactured by Odin Works in Southern Idaho. Technical Specs Full Breakdown Specification Odin Works AR-15 Lite Buffer Body Material Aluminum Weight Range 2.1 oz – 4.2 oz Weights Included 3 Aluminum + 3 Stainless Steel + 1 Tungsten (7 Total) Weights Loaded at Once 3 of 7 — user selected Adjustment Method Face-mounted set screw — no tools required Minimum Weight Config 2.1 oz — 3× Aluminum Maximum Weight Config 4.2 oz — 2× Stainless + 1× Tungsten Platform AR-15 · Mil-Spec Carbine Buffer Tube Installation Drop-In · No Modification Required Best Use Competition, 3-Gun, Lightweight Builds, Over-Gassed Rifles FRT Compatible At max weight (4.2 oz) — minimum threshold only. Heavy buffer recommended for FRT builds. Manufacturing 100% USA Made · Southern Idaho Warranty Odin Works Lifetime Warranty Compatible Platforms AR-15 Mil-Spec Carbine Tube Competition Builds 3-Gun Builds Lightweight AR Builds Over-Gassed Systems Light Load / Subsonic Applications Odin Works AR-15 Lite Buffer — In Stock 100% USA Made · 2.1–4.2 oz · 7 Weights Included · Ships Fast Add to Cart Why Odin Works 🇺🇸 Southern Idaho Every Odin Works buffer is designed and manufactured in Southern Idaho. American materials, American machines, American engineers. ⚖️ 2.1–4.2 oz Range The lightest configurable buffer range available for AR-15 — covers everything from competition minimum weight to standard H2 equivalent. 🔧 Set Screw Simple No roll pins. No punches. No disassembly. Unscrew the face-mounted set screw, swap your weights, done. Change configs between range sessions. ♾️ Lifetime Warranty Odin Works backs every buffer with a lifetime warranty against defects. Buy once. Run forever. Complete Your Build Odin Works Heavy Buffer — FRT Builds Odin Works Ambi Safety — 8 Colors Odin Works HFRT — FRT Specific Disruptor FRT — $299 ARC-Fire V2 FRT — $249.99 Best FRT Triggers 2026 Guide ODIN Works® is a registered trademark of Odin Works, manufactured in Southern Idaho, USA. For forced reset trigger builds requiring H2+ buffer weight, see the Odin Works Adjustable Heavy Buffer. All forced reset triggers are federally legal following the May 2025 DOJ settlement. State restrictions may apply — see our state legal guide. Show more