Franklin Armory BSFIII Equipped M4 223 Remington/5.56 NATO Lower Receiver

Questions & Answers

• Q: Will this upper “'Patriot Ordnance Factory P415 Complete Upper (Piston Driven Adj. Gas Block) 5.56x45mm NATO” fit on this Franklin Armory M4 lower? This will be my first “build”…what else will I need to complete this gun?

  • Answered
  • Asked 04/20/2024 02:39 by Steve S

  A:

  Hi Steve and welcome. Yes Sir it will no issue. Since the upper is complete with bolt and charging handle, nothing else will be needed. Cheers, stay safe and enjoy the build!

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• Q: Can you remove the red selector tab behind the selector or is it part of the frame

  • Answered
  • Asked 04/17/2024 21:07 by Miranda T

  A:

  Hi Miranda, it can be removed.
  Stay safe & have a great day!

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• Q: When purchasing an upper for this,does it have to be an m4 compatible upper? Or will any style upper work?

  • Answered
  • Asked 03/31/2024 15:29 by william b

  A:

  Hi William, any AR upper will work.
  Stay safe & have a great day!

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• Q: I have a sig m400 tread,will this lower work with the upper

  • Answered
  • Asked 03/27/2024 00:27 by william b

  A:

  Hi William and welcome. Yes Sir, this lower will work no issue. Cheers, stay safe and enjoy!
• Q: Will the upper off a regular Smith and Wesson AR15 rifle fit right on this Franklin Armory BSFIII lower or would there have to be any modifications? Barry 3/26/2024

  • Answered
  • Asked 03/26/2024 12:01 by Barry V

  A:

  Hi Barry, the S&W upper will fit without any modifications.
  Stay safe & have a great day!

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• Q: Can I change the stock to a brace and it be considered a pistol?

  • Answered
  • Asked 03/24/2024 18:51 by Ronnie W

  A:

  Hi Ronnie and welcome. No, this was manufactured with a stock and will transfer as a rifle lower. Cheers, stay safe and enjoy!

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• Q: Can this be shipped to my home in AZ or does it require shipment to FFL dealer/person?

  • Answered
  • Asked 03/10/2024 15:20 by Jeff P

  A:

  Hi Jeff, this must be shipped to a FFL, as it a serialized lower receiver.
  Stay safe & have a great day!

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• Q: Will this fit a diamond Back DB15 5.56

  • Answered
  • Asked 03/03/2024 05:09 by Duane A

  A:

  Hi Duane, yes sir, this will fit a BD15 with no issues.
  Stay safe & have a great day!

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• Q: Will fit a 300 Black Out?

  • Answered
  • Asked 01/14/2024 23:48 by Timothy E

  A:

  Hi Timothy and welcome. Yes Sir. This is a standard AR lower with the Binary Trigger and will work on any 300BLK caliber AR upper no issue. Cheers and stay safe!

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• Q: I'm assuming this is MILSPEC, correct? Also, will this work with the 7.62x39 Sig Sauer MCX Spear full upper?

  • Answered
  • Asked 01/09/2024 22:41 by Cal S

  A:

  Hi Cal, you assume correctly, this is Mil-Spec and will work with the MCX Spear full upper.
  Stay safe & have a great day!

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