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Upgrade your AR-15 with the durable Steel receiver extension castle nut from ERGO GRIPS. Perfect fit for M4 style tubes! 🔧

ERGO GRIPS AR-15 RECEIVER EXTENSION CASTLE NUT - ERGO GRIPS AR-15/M16 M4 RECEIVER CASTLE NUT

874748005333 573000064

Attributes

  • Colour: Black
  • Make: AR-15
  • Material: Steel
  • Delivery weight: 0.007kg
  • Shipping height: 12mm
  • Shipping width: 102mm
  • Shipping length: 128mm
  • UPC: 874748005333

Item details

Made in USA
  • Specifications:
  • Color: Black
  • Make: AR-15
  • Material: Steel
14.9 14.9 1 GBP
14.9 GBP £14.90

Prices inclusive of duty & VAT.

Product no.: 573000064

Mfr. No.: 4971-(B)

874748005333 Falcon Industries/ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.
Reordered

Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

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Backordered, delivery time approx. 4-12 weeks from the USA warehouse.

  • Specifications:
  • Color: Black
  • Make: AR-15
  • Material: Steel

Description:

Falcon Industries/ERGO brings this receiver extension castle nut for M4 style receiver extension tubes.

Attributes

  • Colour: Black
  • Make: AR-15
  • Material: Steel
  • Delivery weight: 0.007kg
  • Shipping height: 12mm
  • Shipping width: 102mm
  • Shipping length: 128mm
  • UPC: 874748005333

Item details

Made in USA

Customers reviews

Customer ratings (2)

5 / 5
Definitely recommended

Brownells USA Solid USA Product 05/12/2017

Castle nut has a standard mil-spec finish, has stake pockets which gives you the option and the front to back width measures 0.375" unlike other products which measure 0.3" wide.

Definitely recommended

Brownells USA Good Castle Nut 16/05/2017

Good Nut, Correct Dimensions, Has the spots for the stacking from the endplate to enter, fits with a standard armorers wrench, tough, finish is even and strong. Great product would be a second when I need another.

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