SKU: 78719837986

M16 5.56/223 Bolt Carrier Group Nickel Boron

$85.45 $94.95
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Ships within 48 hours · Estimated delivery Jul 10 - Jul 15

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Description

M16 5.56/223 Bolt Carrier Group Nickel BoronThis is our standard Nickel Boron Coated Bolt Carrier Group for the 5. 56. . 223 caliber. We use a 9310 Vac Arc steel Bolt over the Mil Spec Carpenter 158 Bolt because it's stronger and after many test firings and torture tests we've found it to not only last longer but to be more durable. The Nickel Boron coating has a Rockwell hardness between 52 56. This Bolt Carrier Group comes fully assembled and ready to drop into your rifle. AR15 and M16

This is our standard Nickel Boron Coated Bolt Carrier Group for the 5.56./.223 caliber. We use a 9310 Vac-Arc steel Bolt over the Mil-Spec Carpenter 158 Bolt because it's stronger and after many test firings and torture tests we've found it to not only last longer but to be more durable. The Nickel Boron coating has a Rockwell hardness between 52-56. This Bolt Carrier Group comes fully assembled and ready to drop into your rifle.

 

- AR15 and M16 Compatible

- 8620 Steel Carrier Nickel Boron Coated

- 9310 Vac-Arc Steel Bolt Nickel Boron Coated

- 4340 Steel Cam Pin Nickel Boron Coated

- 4140 Steel Gas Key Nickel Boron Coated

- Tool Steel Extractor Nickel Boron Coated

- Shot Peened

- MPI (Magnetic Particle Inspected)

- HPT (High Pressure Tested)

- Gas key staked to Mil-Spec Standards

- Grade 8 Hardened Fasteners

- Extractor Insert with upgraded Crane O-Ring

- Power Spring Kit

- Nickel Boron Coated

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 78719837986

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A. Peri
Charlottesville, US
★★★★★ 5
Best mineral sunscreen
Size: 3.4 Fl Oz (Pack of 1)
Mineral sunscreen that isn’t chalky or pasty.
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Reviewed in the United States on March 15, 2026
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Verified Purchase
Joe
Massapequa, US
★★★★★ 1
Product leaks into the cap
Size: 3.4 Fl Oz (Pack of 1), Size: 3.4 Fl Oz (Pack of 1)
The packaging appears to be defective and potentially tampered with. Specifically, the nozzle is a different color from the rest of the tube—one that is not consistent with the brand’s standard packaging (I am familiar with this brand and have purchased it before). Additionally, the cap does not close properly, causing the product to leak into the lid and resulting in unnecessary waste. This raises serious concerns about the product’s authenticity, quality control, and whether it may have been previously opened or altered.
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Reviewed in the United States on March 24, 2026
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Narcoossee gal
Waukegan, US
★★★★★ 5
Best facial sunscreen I have used
Coola makes the best facial sunscreen, and I have tried many brands previous to using Coola. The texture is light and creamy without being oily, absorbing well and leaving no white residue. It does not clog my pores and nor cause those white bumps that last for months. Coola sunscreen works well to protect my skin from sunburn and from making more freckles and dark spots. It has no perfumy fragrance, much to my relief. Once it has dried, I can apply concealer or powder over it. No oily streaks or caking of other make-up so I have no excuse to avoid wearing this sunscreen every day. I have recommended Coola facial sunscreen to my friends who had laser dermabrasion. Their skin is more sensitive to both perfumed chemicals and sun exposure, and they have given good reports too.
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Reviewed in the United States on August 31, 2024
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MK
Battle Creek, US
★★★★★ 5
Pricey, but worth it.
Coola products were included in a swag bag for a work vacation at a resort & I’ve not looked back. (The smell of the body spray sunscreen made me wish I could eat it, tbh.) This product has become my daily sunscreen as it’s the only one I’ve tried that doesn’t cause my skin to break out. I love the natural ingredients in their products AND that it doesn’t add to reef barrier breakdown. I only wish the brand wasn’t so pricey, but the benefits are worth it to me.
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Reviewed in the United States on December 23, 2025
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Amazon Customer
Natrona Heights, US
★★★★★ 5
Best sunscreen ever
Best sunscreen ever, never get burned when I use it
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Reviewed in the United States on April 24, 2026

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