Odin Works Adjustable 9mm Buffer5.47.4 ozAR-9 Blowback & PCC Builds

100% USA Made
Odin Works
Southern Idaho
5.47.4 oz Range
AR-99MM Blowback
PCC Compatible
In Stock

ODIN WorksSouthern Idaho100% USA Made
Stainless steel body3 tungsten weightsAR-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 cyclingit 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 weights1 aluminum, 1 stainless steel, and 3 tungstencovering 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 SystemTungsten Heavy

Built Heavy for 9mm Blowback

Unlike the AR-15 system, the 9mm buffer includes three tungsten weightsbecause 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
Aluminum1
Light endminimum config at 5.4 oz

SS
Stainless1
Midintermediate blowback tuning

W
Tungsten3
Heavy3 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 systemthe 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 systemwith its three tungsten weightsgives 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 includedthe 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 rangethe widest weight range available for 9mm blowback AR platforms. Covers light 115gr target loads through heavy 147gr subsonic and +P defensive ammunition.
• Stainless steel bodyheavy-duty construction matching the demands of the high-cycle-rate 9mm blowback operating environment. Built to outlast aluminum alternatives.
• AR-9 and 9mm PCC compatiblefits standard AR-9 mil-spec buffer tube configurations used by Glock-pattern, Colt-pattern, and other common AR-9 lower platforms.
• Suppressed 9mm optimizationrunning a suppressor on your AR-9? Start with maximum weight. The additional backpressure from a suppressor dramatically changes cycling behavior in blowback systemsthe adjustable range gives you room to tune.
• Competition 3-Gun PCC tuning9mm 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 screwswap weights from the front without disassembly. Field-adjustable in seconds.
• 100% USA madeOdin Works, Southern Idaho. Lifetime warranty.

Technical Specs

Full Breakdown

Compatible Platforms

AR-9
9mm Blowback PCC
Glock-Pattern AR-9
Colt-Pattern AR-9
3-Gun PCC Division
Suppressed 9mm Builds
115gr124gr147gr Loads

Odin Works 9mm BufferIn Stock
100% USA Made5.47.4 oz3 Tungsten WeightsShips Fast

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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 tubeverify your lower’s buffer tube compatibility before ordering.