SKU: 7375373695

Odin Works Adjustable 9mm Buffer — 5.4–7.4 oz · AR-9 Blowback & PCC Builds

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Description

Odin Works Adjustable 9mm Buffer — 5.4–7.4 oz · AR-9 Blowback & PCC BuildsDescription > HTML editor #pw scoped all: initial No @keyframes ! important on all colors > 100% USA Made Odin Works Southern Idaho 5. 47. 4 oz Range AR 9 9MM Blowback PCC Compatible In Stock ODIN Works Southern Idaho 100% USA Made Stainless steel body 3 tungsten weights AR 9 and 9mm PCC blowback compatible The AR 9 blowback platform is notorious for one problem: buffer weight. Unlike direct impingement AR 15s, the 9mm blowback AR 9 has no gas system

100% USA Made Odin Works Southern Idaho 5.4–7.4 oz Range AR-9 · 9MM Blowback PCC Compatible In Stock
🇺🇸
ODIN Works · Southern Idaho — 100% USA Made
Stainless steel body · 3× tungsten weights · AR-9 and 9mm PCC blowback compatible

The AR-9 blowback platform is notorious for one problem: buffer weight. Unlike direct-impingement AR-15s, the 9mm blowback AR-9 has no gas system to regulate cycling — it runs entirely on bolt mass and spring tension. Get the buffer weight wrong and you get short-strokes, failures to feed, excessive recoil, or a rifle that beats itself to pieces. The Odin Works Adjustable 9mm Buffer solves this with 5 weights — 1 aluminum, 1 stainless steel, and 3 tungsten — covering a 5.4 to 7.4 oz range that handles everything from standard 115gr loads to +P ammunition and everything in between. 100% USA made in Southern Idaho.


5-Weight System — Tungsten Heavy

Built Heavy for 9mm Blowback

Unlike the AR-15 system, the 9mm buffer includes three tungsten weights — because the AR-9 blowback platform needs mass, not just versatility. Heavier is almost always better in a blowback AR-9. The three tungsten weights let you dial in the precise heaviness your specific 9mm build and ammunition require.

AL Aluminum × 1 Light end — minimum config at 5.4 oz
SS Stainless × 1 Mid — intermediate blowback tuning
W Tungsten × 3 Heavy — 3 tungsten for maximum 7.4 oz config
5.4 Min oz Lightest 9mm blowback config
7.4 Max oz Max weight — +P, heavy loads, suppressed
Why 9mm Blowback Needs a Heavy Buffer

In a direct-impingement AR-15, the gas system bleeds off energy before it reaches the BCG. In a 9mm blowback AR-9, there is no gas system — the bolt moves directly from cartridge pressure with nothing to slow it down except buffer weight and spring tension. This is why an AR-9 needs a much heavier buffer than an AR-15 running the same barrel length. Under-buffered 9mm blowback builds short-stroke, fail to eject, or run so harshly they damage components. The Odin Works 9mm adjustable system — with its three tungsten weights — gives you the mass range to dial in any 9mm blowback build running any ammunition.


Key Features

The 9mm Buffer Your AR-9 Deserves

  • Three tungsten weights included — the heaviest weight option available. Three tungsten weights give you fine-grained control over the heavy end of the 9mm blowback weight range where most AR-9s need to operate.
  • 5.4 to 7.4 oz range — the widest weight range available for 9mm blowback AR platforms. Covers light 115gr target loads through heavy 147gr subsonic and +P defensive ammunition.
  • Stainless steel body — heavy-duty construction matching the demands of the high-cycle-rate 9mm blowback operating environment. Built to outlast aluminum alternatives.
  • AR-9 and 9mm PCC compatible — fits standard AR-9 mil-spec buffer tube configurations used by Glock-pattern, Colt-pattern, and other common AR-9 lower platforms.
  • Suppressed 9mm optimization — running a suppressor on your AR-9? Start with maximum weight. The additional backpressure from a suppressor dramatically changes cycling behavior in blowback systems — the adjustable range gives you room to tune.
  • Competition 3-Gun PCC tuning — 9mm PCC is one of the fastest-growing competition divisions. Fine-tune your AR-9 for the specific ammunition and stage requirements you're running. Change configs between matches without buying new buffers.
  • Face-mounted set screw — swap weights from the front without disassembly. Field-adjustable in seconds.
  • 100% USA made — Odin Works, Southern Idaho. Lifetime warranty.

Technical Specs

Full Breakdown

Specification Odin Works 9mm Buffer
Body Material Stainless Steel
Weight Range 5.4 oz – 7.4 oz
Weights Included 1 Aluminum + 1 Stainless Steel + 3 Tungsten (5 Total)
Minimum Weight Config 5.4 oz
Maximum Weight Config 7.4 oz
Adjustment Method Face-mounted set screw — no tools required
Platform AR-9 · 9mm Blowback · PCC · Mil-Spec Buffer Tube
Glock Pattern Compatible Yes — standard mil-spec AR-9 tube
Colt Pattern Compatible Yes — standard mil-spec AR-9 tube
Suppressed Compatible Yes — run maximum weight config
Installation Drop-In · No Modification Required
Manufacturing 100% USA Made · Southern Idaho
Warranty Odin Works Lifetime Warranty
Compatible Platforms
AR-9 9mm Blowback PCC Glock-Pattern AR-9 Colt-Pattern AR-9 3-Gun PCC Division Suppressed 9mm Builds 115gr · 124gr · 147gr Loads
Odin Works 9mm Buffer — In Stock
100% USA Made · 5.4–7.4 oz · 3 Tungsten Weights · Ships Fast
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Related Products

ODIN Works® is a registered trademark of Odin Works, manufactured in Southern Idaho, USA. Compatible with mil-spec AR-9 buffer tube configurations. Glock-pattern and Colt-pattern AR-9 lowers may require a dedicated 9mm buffer tube — verify your lower's buffer tube compatibility before ordering.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7375373695

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stebi
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Size: Medium, Color: Navy Blue
Very high quality and style for a great price! I'm seriously impressed with this suit! The stitching is great, and the fabric looks and feels high quality. Love the navy blue color and the fit. This was a great buy and so much more than I expected! I'd buy it again!
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San Leandro, US
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Good price
Size: Large, Color: Light Grey
Good quality and a great price compared to others! The sleeves were a little long, but overall I loved it.
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Whitzshopn
Alexandria, US
★★★★★ 5
great suit for teenagers
Size: Small, Color: Dark Grey, Size: Small, Color: Dark Grey
We loved this suit, it is true to color so it has this high end quality look and fit my tall(5’10), 14yr son like it was custom tailored. he likes that it has a slim fit and still breathable. If only the hidden elastic band was adjustable then this suit would have been perfect. It was great for 8th grade graduation and affordable
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Amazon Customer
Chelsea, US
★★★★★ 5
Quality fabric is prom quality.
Size: Medium, Color: Navy Blue, Size: Medium, Color: Navy Blue
My son is 170 lbs 5’11 fit like a glove he is normally a 34 waste there was room in the pants didn’t need a belt they sit nicely,very little stretch In the pants and jacket, but for a slim teenager not a problem. and he has a little longer legs than average I’m surprised they were perfect length. Quality fabric it was suit material, the pockets on the jacket are fake that’s fine for me. The color was awesome! This cooper and Nelson men’s suit was $61 delivered to my door, best purchase and affordable. I give 5 stars I’m so happy with it so was he.
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LuAnne Mooney
Lexington, US
★★★★★ 5
Great price. Looks great!
Size: Small, Color: Navy Blue
Nice fit, looks great!
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Reviewed in the United States on May 31, 2026

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