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AeroPrecision
The Aero Precision M5E1 Handguard Barrel Nut Kit for DPMS-threaded AR-308 uppers gives you the hardware you need to securely attach an M5 Enhanced handguard to your rifle. If you're building or upgrading an AR-10 platform rifle with a DPMS-pattern threaded upper receiver, this barrel nut is the critical link between your upper and your rail system. It's a straightforward part that does one job well: it threads onto your upper and provides a solid mounting platform for your handguard while allowing you to dial in proper gas tube timing.
Built from 1144 stressproof steel and finished with a durable QPQ/Melonite coating, this barrel nut is engineered to handle the demands of a full-power rifle platform. The kit includes five shims, giving you the adjustment capability you need to ensure your gas tube aligns correctly with your upper receiver—a detail that matters for reliable cycling and consistent performance downrange. Installation is straightforward: torque the nut to 65 ft-lbs using a standard AR15 armorer's wrench, and you're done.
This kit is specifically designed for DPMS-threaded uppers, so verify your upper's thread pattern before ordering. Aero Precision M5E1 Enhanced Upper Receivers come with the barrel nut and mounting platform already integrated, so you won't need this if you're running one of those. But if you've got a standard DPMS-threaded upper and want to use an Aero Precision M5 handguard, this barrel nut kit is what makes the connection work.
| Brand | Aero Precision |
| Product Type | Handguard Barrel Nut Kit |
| Thread Pattern | DPMS |
| Platform | AR-308 |
| Material | 1144 Stressproof Steel |
| Finish | QPQ/Melonite |
| Weight | 5.4 oz |
| Torque Spec | 65 ft-lbs |
| Included Components | M5E1 Handguard Barrel Nut, 5 shims |
Only if your upper receiver has a DPMS-pattern threaded barrel nut hole. Verify your upper's thread pattern before purchase. If you have an Aero Precision M5E1 Enhanced Upper Receiver, the barrel nut and rail mounting platform are already forged into the upper, so you won't need this kit.
The five included shims allow you to adjust gas tube timing and alignment with your upper receiver. Install them between the barrel nut and upper as needed to dial in proper clearance and function.
Torque to 65 ft-lbs using a standard AR15 armorer's wrench. Do not over-torque.
The kit includes the M5E1 Handguard Barrel Nut and a pack of five shims for timing adjustment.
AeroPrecision
The Aero Precision M5E1 Handguard Barrel Nut Kit for DPMS-threaded AR-308 uppers gives you the hardware you need to securely attach an M5 Enhanced handguard to your rifle. If you're building or upgrading an AR-10 platform rifle with a DPMS-pattern threaded upper receiver, this barrel nut is the critical link between your upper and your rail system. It's a straightforward part that does one job well: it threads onto your upper and provides a solid mounting platform for your handguard while allowing you to dial in proper gas tube timing.
Built from 1144 stressproof steel and finished with a durable QPQ/Melonite coating, this barrel nut is engineered to handle the demands of a full-power rifle platform. The kit includes five shims, giving you the adjustment capability you need to ensure your gas tube aligns correctly with your upper receiver—a detail that matters for reliable cycling and consistent performance downrange. Installation is straightforward: torque the nut to 65 ft-lbs using a standard AR15 armorer's wrench, and you're done.
This kit is specifically designed for DPMS-threaded uppers, so verify your upper's thread pattern before ordering. Aero Precision M5E1 Enhanced Upper Receivers come with the barrel nut and mounting platform already integrated, so you won't need this if you're running one of those. But if you've got a standard DPMS-threaded upper and want to use an Aero Precision M5 handguard, this barrel nut kit is what makes the connection work.
| Brand | Aero Precision |
| Product Type | Handguard Barrel Nut Kit |
| Thread Pattern | DPMS |
| Platform | AR-308 |
| Material | 1144 Stressproof Steel |
| Finish | QPQ/Melonite |
| Weight | 5.4 oz |
| Torque Spec | 65 ft-lbs |
| Included Components | M5E1 Handguard Barrel Nut, 5 shims |
Only if your upper receiver has a DPMS-pattern threaded barrel nut hole. Verify your upper's thread pattern before purchase. If you have an Aero Precision M5E1 Enhanced Upper Receiver, the barrel nut and rail mounting platform are already forged into the upper, so you won't need this kit.
The five included shims allow you to adjust gas tube timing and alignment with your upper receiver. Install them between the barrel nut and upper as needed to dial in proper clearance and function.
Torque to 65 ft-lbs using a standard AR15 armorer's wrench. Do not over-torque.
The kit includes the M5E1 Handguard Barrel Nut and a pack of five shims for timing adjustment.
