Direct impingement or DI is a type of operating system commonly used in AR-15 type firearms. This gas system utilizes gas from a fired cartridge to impart force on the bolt carrier cycle the action.
Showing 1–16 of 17 results
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![Direct Impingement Dictator Gas Block](https://pof-usa.com/wp-content/uploads/2022/11/Dictator_Adjustable_Gas_Block-300x230.png)
Dictator Adjustable Gas Block
$163.00 – $171.00
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![Direct impingement Dictator gas block repair Kit](https://pof-usa.com/wp-content/uploads/2020/06/01289-300x300.jpg)
Dictator Maintenance Kit
$25.00
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![Dictator Straight Gas Tube](https://pof-usa.com/wp-content/uploads/2024/07/DICTATOR-TUBE-1-300x300.png)
Dictator Straight Gas Tube
$18.00 – $20.00
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![DI non-adjustable Low Profile Gas Block](https://pof-usa.com/wp-content/uploads/2024/07/LOW-PROFILE-GAS-BLOCK-GB-750-300x300.png)
Low Profile Gas Block
$28.00
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![Mil-spec DI Gas Tube](https://pof-usa.com/wp-content/uploads/2024/07/Mil-spec-DI-Gas-Tube-300x300.jpg)
Mil-spec Gas Tubes
$21.00 – $28.00
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![Mil-spec AR-15 Picatinny Flat Top Upper Receiver with M4 feed ramps.](https://pof-usa.com/wp-content/uploads/2024/07/MIL-SPEC-AR-15-FLAT-TOP-UPPER-RECEIVER-ASSY-300x300.png)
Mil-spec Upper Receiver
$147.00 – $198.00
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![POF-USA Mil-Spec AR-15 Bolt Carrier group with roller cam pin](https://pof-usa.com/wp-content/uploads/2020/06/01300-300x300.jpg)
Milspec Enhanced Bolt Carrier Group
$220.00
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![Black Anodize 10" 350 Legend direct impingement Minuteman upper receiver assembly](https://pof-usa.com/wp-content/uploads/2024/07/Minuteman-350-Legend-Upper-300x300.jpg)
Minuteman 350 Legend Upper
$700.00 – $750.00
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![10.5" 5.56x45 NATO direct impingement Minuteman upper receiver assembly](https://pof-usa.com/wp-content/uploads/2020/06/MinutemanUpper-1-300x300.jpg)
Minuteman Upper
$1,102.00 – $1,248.00
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![Direct impingement 300 Black Out Renegade + upper receiver assembly](https://pof-usa.com/wp-content/uploads/2020/06/Renegade-300BLK-300x300.jpg)
Renegade Plus 300BLK Upper
$1,263.00 – $1,351.00
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![16" 5.56x45 NATO direct impingement Renegade + upper receiver assembly](https://pof-usa.com/wp-content/uploads/2020/06/RenPlusBlkBCG-300x300.jpg)
Renegade Plus Upper
$1,263.00 – $1,425.00
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![16" .308 WIN direct impingement Revolution upper receiver assembly](https://pof-usa.com/wp-content/uploads/2020/06/01622-Rev-DI-16.5-300x300.jpg)
Revolution DI Upper
$1,763.00 – $1,939.00
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![Revolution DI Upper Receiver with M4 feed ramps.](https://pof-usa.com/wp-content/uploads/2024/07/REVOLUTION-DI-UPPER-RECEIVER-300x300.png)
Revolution DI Upper Receiver
$330.00 – $382.00
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![16.5" .308 WIN Rogue Upper Receiver](https://pof-usa.com/wp-content/uploads/2024/07/Rogue-Upper-Receiver-Assembly-300x300.jpg)
Rogue Upper
$1,454.00 – $1,733.00
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![ROGUE Picatinny Flat Top Upper Receiver with M4 feed ramps.](https://pof-usa.com/wp-content/uploads/2024/07/ROGUE-DI-UPPER-RECEIVER-ASSY-300x300.png)
Rogue Upper Receiver
$272.00 – $323.00
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![Roller Cam Pin upgrade Kit for Mil-Spec AR-15 bolt carrier groups](https://pof-usa.com/wp-content/uploads/2020/06/00393-300x300.jpg)
Roller Cam Pin Upgrade Kit
$59.00
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