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CMMG
The CMMG ZEROED AR15 adjustable gas block puts you in control of your rifle's gas system with precision tuning that works for everything from suppressed shooting to load-specific optimization. Instead of accepting whatever gas flow the factory decides, you get twenty distinct adjustment positions that let you dial in the exact amount of gas your gun needs—no more beating your rifle up with excess blowback, and no more short-stroking when you run different ammo or add a suppressor.
Built from 4140 steel with a nitride finish, the .750-diameter gas block handles the rigors of regular shooting while resisting wear and corrosion. The design includes a sacrificial cleanout chamber that collects excess carbon buildup, so you can actually access and clear fouling without disassembling your entire rifle. That user-serviceable approach means less frustration and more time shooting. You'll get an adjustment wrench and roll pin in the box—everything you need to install and tune it.
Whether you're chasing precision at distance, running a suppressor quietly and reliably, or just matching your gas system to a specific load, the ZEROED block takes the guesswork out of AR tuning. Twenty positions gives you the granularity to dial in exactly where your gun runs best.
| Gas Block Diameter | .750 |
| Inner Diameter (ID) | .750 |
| Material | 4140 Steel, 17-4 Stainless |
| Finish | Nitride |
| Adjustment Positions | 20-position detent |
| Included Accessories | Hex wrench, roll pin |
Yes. The CMMG ZEROED is designed to handle suppressed shooting by letting you dial back gas flow to your preferred level. The 20-position adjustment gives you the control to find the sweet spot where your rifle cycles reliably without excess blowback.
The sacrificial cleanout chamber collects excess carbon that would otherwise build up inside the gas block. You can access and clear this debris without taking apart the whole rifle, keeping maintenance quick and straightforward.
The gas block ships with a hex wrench for adjusting the 20-position screw and a roll pin for installation.
The .750 ID diameter matches standard AR gas tube specifications. Verify your upper's gas tube size before ordering to ensure proper fit.
CMMG
The CMMG ZEROED AR15 adjustable gas block puts you in control of your rifle's gas system with precision tuning that works for everything from suppressed shooting to load-specific optimization. Instead of accepting whatever gas flow the factory decides, you get twenty distinct adjustment positions that let you dial in the exact amount of gas your gun needs—no more beating your rifle up with excess blowback, and no more short-stroking when you run different ammo or add a suppressor.
Built from 4140 steel with a nitride finish, the .750-diameter gas block handles the rigors of regular shooting while resisting wear and corrosion. The design includes a sacrificial cleanout chamber that collects excess carbon buildup, so you can actually access and clear fouling without disassembling your entire rifle. That user-serviceable approach means less frustration and more time shooting. You'll get an adjustment wrench and roll pin in the box—everything you need to install and tune it.
Whether you're chasing precision at distance, running a suppressor quietly and reliably, or just matching your gas system to a specific load, the ZEROED block takes the guesswork out of AR tuning. Twenty positions gives you the granularity to dial in exactly where your gun runs best.
| Gas Block Diameter | .750 |
| Inner Diameter (ID) | .750 |
| Material | 4140 Steel, 17-4 Stainless |
| Finish | Nitride |
| Adjustment Positions | 20-position detent |
| Included Accessories | Hex wrench, roll pin |
Yes. The CMMG ZEROED is designed to handle suppressed shooting by letting you dial back gas flow to your preferred level. The 20-position adjustment gives you the control to find the sweet spot where your rifle cycles reliably without excess blowback.
The sacrificial cleanout chamber collects excess carbon that would otherwise build up inside the gas block. You can access and clear this debris without taking apart the whole rifle, keeping maintenance quick and straightforward.
The gas block ships with a hex wrench for adjusting the 20-position screw and a roll pin for installation.
The .750 ID diameter matches standard AR gas tube specifications. Verify your upper's gas tube size before ordering to ensure proper fit.
