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Angstadt Arms
The Angstadt 3-Lug 9mm Adapter with 1/2x28 thread is a precision muzzle device built for shooters running suppressed pistol-caliber firearms. If you're mounting a sound suppressor on a 9mm host, this hardened steel adapter serves as the connection point between your barrel and any universal 3-lug suppressor—giving you fast, repeatable attachment without the hassle of shims or crush washers. The black nitride finish resists corrosion and handles the wear that comes with frequent suppressor swaps on the range or in the field.
Angstadt Arms engineered this adapter with a universal 3-lug interface, so it pairs with any pistol-caliber suppressor using the same standard. That flexibility matters if you own multiple suppressors or plan to upgrade. The adapter also works with Angstadt's own 3-Lug QD Blast Shield for operators who want that added layer of blast management. At 1.42 inches long and less than an ounce, it keeps your muzzle profile trim without adding unnecessary weight.
Setup is straightforward: thread it onto your 1/2x28 barrel, mount your suppressor, and you're shooting. The design doesn't force you to use shims, but if you need to dial in suppressor timing for ejection or baffle strike clearance, shims can be added—just don't use a crush washer. That simplicity, paired with the robust hardened steel construction, makes this a reliable choice for dedicated suppressed shooting.
| Caliber | 9mm |
| Thread Pitch | 1/2x28 |
| Length | 1.42" |
| Weight | 0.9 oz |
| Material | Hardened steel with black nitride finish |
The Angstadt 3-Lug 9mm Adapter features a universal 3-lug interface, so it's compatible with any pistol-caliber sound suppressor that uses the 3-lug mounting standard. It also works with the Angstadt Arms 3-Lug QD Blast Shield. If your suppressor uses a different mounting system (Bravo, Plan-B, ASR, etc.), you'll need a matching adapter.
No—the adapter doesn't require shims out of the box. However, if you want to adjust suppressor timing for ejection control or to ensure clearance, shims can be added. Do not use a crush washer when installing.
This adapter is threaded for 1/2x28, which is the standard 9mm pistol barrel thread pitch. Make sure your barrel is cut to 1/2x28 before installation.
Yes. The Angstadt 3-Lug 9mm Adapter is designed for 9mm hosts, so it will fit any 1/2x28 threaded 9mm barrel—pistols, AR-9 uppers, pistol caliber carbines, and other PCCs that use standard 9mm cartridges.
Angstadt Arms
The Angstadt 3-Lug 9mm Adapter with 1/2x28 thread is a precision muzzle device built for shooters running suppressed pistol-caliber firearms. If you're mounting a sound suppressor on a 9mm host, this hardened steel adapter serves as the connection point between your barrel and any universal 3-lug suppressor—giving you fast, repeatable attachment without the hassle of shims or crush washers. The black nitride finish resists corrosion and handles the wear that comes with frequent suppressor swaps on the range or in the field.
Angstadt Arms engineered this adapter with a universal 3-lug interface, so it pairs with any pistol-caliber suppressor using the same standard. That flexibility matters if you own multiple suppressors or plan to upgrade. The adapter also works with Angstadt's own 3-Lug QD Blast Shield for operators who want that added layer of blast management. At 1.42 inches long and less than an ounce, it keeps your muzzle profile trim without adding unnecessary weight.
Setup is straightforward: thread it onto your 1/2x28 barrel, mount your suppressor, and you're shooting. The design doesn't force you to use shims, but if you need to dial in suppressor timing for ejection or baffle strike clearance, shims can be added—just don't use a crush washer. That simplicity, paired with the robust hardened steel construction, makes this a reliable choice for dedicated suppressed shooting.
| Caliber | 9mm |
| Thread Pitch | 1/2x28 |
| Length | 1.42" |
| Weight | 0.9 oz |
| Material | Hardened steel with black nitride finish |
The Angstadt 3-Lug 9mm Adapter features a universal 3-lug interface, so it's compatible with any pistol-caliber sound suppressor that uses the 3-lug mounting standard. It also works with the Angstadt Arms 3-Lug QD Blast Shield. If your suppressor uses a different mounting system (Bravo, Plan-B, ASR, etc.), you'll need a matching adapter.
No—the adapter doesn't require shims out of the box. However, if you want to adjust suppressor timing for ejection control or to ensure clearance, shims can be added. Do not use a crush washer when installing.
This adapter is threaded for 1/2x28, which is the standard 9mm pistol barrel thread pitch. Make sure your barrel is cut to 1/2x28 before installation.
Yes. The Angstadt 3-Lug 9mm Adapter is designed for 9mm hosts, so it will fit any 1/2x28 threaded 9mm barrel—pistols, AR-9 uppers, pistol caliber carbines, and other PCCs that use standard 9mm cartridges.
