Q&A for Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver

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Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts + AR 15 Parts Primary Weapons Systems AR15 Parts + AR15 Upper Receivers Primary Weapons Systems AR15 Upper Receivers Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts + Rifle Parts Primary Weapons Systems Rifle Parts + AR 15 Parts Primary Weapons Systems AR15 Parts + AR15 Upper Receivers Primary Weapons Systems AR15 Upper Receivers Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts + AR 15 Parts Primary Weapons Systems AR15 Parts Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts + Rifle Parts Primary Weapons Systems Rifle Parts + AR 15 Parts Primary Weapons Systems AR15 Parts Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A Primary Weapons Systems + Gun Parts Primary Weapons Systems Gun Parts + Rifle Parts Primary Weapons Systems Rifle Parts Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver Q&A

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Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver

$1,129.95 $1,049.95 Save $80.00

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FloridaMan, member, from FL, United States, asked on November 28, 2022

Would my lower require a buffer tube?

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on December 01, 2022

Yes, the Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver is piston operated but will still require a buffer assembly in order to function.

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Jack, member, from WA, United States, asked on November 01, 2022

Does it come with Radian Raptor-LT Ambi Charging Handle and BCG (PWS Long Stroke Piston Bolt Carrier Group)?

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on November 03, 2022

Yes, the Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver includes a BCG and Radian Raptor Ambidextrous Charging Handle.

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Dan, member, from TN, United States, asked on October 06, 2022

Does this upper work with the JP Silent Capture??

Expert Answer

Answered by Hunter, Gear Expert, from OH, United States, on October 12, 2022

The JP Silent Capture Spring system is compatible with the Primary Weapons Systems MK109 MOD1-M 9.75in bbl Upper Receiver. I recommend using the H3 model.

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Ipdaily, member, from NV, United States, asked on May 01, 2022

Whats the thread pitch on the muzzle

Expert Answer

Answered by Ethan, Gear Expert, from IL, United States, on May 17, 2022

The Primary Weapons Systems MK109 MOD1-M 9.75in bbl Upper Receiver includes the PWS Triad flash suppressor, threaded 5/8x24 TPI.

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Alex Raynor, member, from NC, United States, asked on April 12, 2021

This has an adjustable gas block I believe

Answered by KIRKN8R, member, from AZ, United States, on August 19, 2021

Yes there is 3 settings on the gas block.

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Anthony, guest, from IN, United States, asked on September 04, 2025

Is this an m-lok hand guard?

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More Deals

Q&A for Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver — 6 Questions & 5 Answers

Would my lower require a buffer tube?

Does it come with Radian Raptor-LT Ambi Charging Handle and BCG (PWS Long Stroke Piston Bolt Carrier Group)?

Does this upper work with the JP Silent Capture??

Whats the thread pitch on the muzzle

This has an adjustable gas block I believe

Is this an m-lok hand guard?

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Q&A for Primary Weapons Systems MK109 MOD1-M 9.75-inch Upper Receiver — 6 Questions & 5 Answers

Would my lower require a buffer tube?

Does it come with Radian Raptor-LT Ambi Charging Handle and BCG (PWS Long Stroke Piston Bolt Carrier Group)?

Does this upper work with the JP Silent Capture??

Whats the thread pitch on the muzzle

This has an adjustable gas block I believe

Is this an m-lok hand guard?