Proof Research Inc
Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 6 ARC 16" 1:7.5 Twist 5/8-24
Product Details
Proof designed their AR barrels with the goal of improving performance and reliability in the AR platform. Their Caliber Matched Gas System (CAMGAS) results in a gas system that is tuned specifically for the cartridge and length of the barrel. The AR-15 Platform was originally designed around the 223REM and 5.56NATO cartridges and the AR-10 was designed around the 308 Win/7.62NATO round. With higher performance cartridges such as the 22 Nosler and 6.5 Creedmoor the bore pressure remains higher further down the barrel. By moving the port location we ensure that the gas system pressure is the same as what the AR platforms were originally designed around. The result is a recoil impulse that is noticeably softer less fouling in the receiver increased reliability of extraction and less wear and tear on brass. This helps keep you on target and shooting while taking advantage of the latest high performance cartridges.
Barrel Length: 16" | Barrel Material: Stainless Steel | Barrel Twist Rate: 1:7.5 | Barrel Type: Threaded | Brand: Proof | CA Prop 65: Yes | Caliber: 6mm ARC | Color: Silver | Firearm Accessories Weapon Fit: AR-15 | Muzzle Thread: 5/8-24 UPC: 843068128664Specifications
| Brand | Proof Research Inc |
|---|---|
| UPC | 843068128664 |
| Caliber | 6mm ARC |
| Color / Finish | Stainless / Silver |
| Barrel Length | 16" |
| Platform / Fits | AR-15 |
| Material | Stainless Steel |
| Thread Pitch | 5/8x24 |
| Part Type | Barrel |
| Weight | 3.275 lb |
| Condition | New |
Buying this item
- Does the Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 6 ARC 16" 1:7.5 Twist 5/8-24 ship free?
- Orders over $250 ship free within the US; smaller orders ship for a flat $9.99. Local pickup in Rocky Mount, NC 27803 is also available.
- Is the Proof Steel Drop in Barrel for Rifle Gas System AR-15 Compatible Firearms 6 ARC 16" 1:7.5 Twist 5/8-24 in stock?
- Yes — live distributor inventory shows it in stock and it ships or is ready for pickup within 1–3 business days.
- What is the return policy?
- Non-firearm items may be returned within 30 days (a restocking fee of up to 15% applies if the packaging was opened). Firearms and ammunition are final sale once transferred, per federal law.
All firearm sales require background checks and compliance with federal, state, and local laws. You must be 21+ for handguns/stripped receivers and 18+ for long guns.
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