+1-800-504-5897 Help Center Check Order Status
About Us Policies Reviews How To
Free Shipping & Free Returns*

FREE SHIPPING on Over 250,000 Products

Shop now and get Free Value Shipping on most orders over $49 to the contiguous 48 states, DC, and to all U.S. Military APO/FPO/DPO addresses.

Enjoy our FREE RETURNS

We want to ensure that making a return is as easy and hassle-free as possible! If for any reason you are not satisfied with your purchase, simply return the item within 30 days of receipt, and we'll cover the cost of return shipping. Learn more about our Return Policy.

  • Entire Store
  • ...
  • Apparel & Footwear
  • Astronomy
  • Everything Else
  • Eyewear
  • Hunting Gear
  • Lab Equipment
  • Military Gear
  • Outdoor Gear
  • Photography Equipment
  • Police, EMS & Fire
  • Shooting
  • Sport Optics
  • Sports & Hobbies
TIP
Shopping Cart

FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer FZ-M164-01-SAH Color: EXO, Finish: Nickel Boron, $3.01 Off w/ Free S&H

FailZero M16/M4 Bolt Carrier Group BCG w/ Hammer, EXO, FZ-M164-01-SAH
FailZero M16/M4 Bolt Carrier Group w/ Hammer, EXO, FZ-M164-01-SAH
FailZero M16/M4 Bolt Carrier Group BCG w/ Hammer, EXO, FZ-M164-01-SAH
1 of 2 images
FailZero M16/M4 Bolt Carrier Group BCG w/ Hammer, EXO, FZ-M164-01-SAH
FailZero M16/M4 Bolt Carrier Group w/ Hammer, EXO, FZ-M164-01-SAH
2 of 2 images
FailZero M16/M4 Bolt Carrier Group w/ Hammer, EXO, FZ-M164-01-SAH

Tap Tap to Zoom

Questions & Answers
Will this work on a semi-auto build? Expert Answer

Yes. The FailZero M16/M4 Bolt Carrier Group w/ Hammer will have no issues fitting and functioning as intended in any AR15 platform chambered in 5.56/.223 and 300 Blackout.

by Ethan, Gear Expert, May 2, 2022
Will this work with a semi-auto build? Or only a full auto build? Also is this Nickle boron? Expert Answer

The FailZero M16/M4 Bolt Carrier Group will fit and function in a Semi-Auto AR15 as it features a Semi-Auto hammer. It also features a EXO Nickel Boron finish.

by Ethan, Gear Expert, April 26, 2022
View All Q&A You Have a Question? Ask!
Customer Reviews
Helpful Positive Review
Amazing bolt by Trixie Pony, Verified Owner, September 12, 2019
I've already put 200 rounds through this since I got it, and it has been a WONDERFUL piece of kit. Not a single malfunction the entire time. The coating is slick, and all I need to do is wipe, or occasionally use some cleaner to get carbon off. Would...
Read More...
3/3 found this helpful
Helpful Negative Review
Severe drag marks on bottom from hammer. Hammer is ok. by JR, Verified Owner, January 25, 2022
I bought one of these around 10 years ago directly from the company. Over 10K rounds and never an issue. This one, after 150 rounds, the gun ran worse. Thought it was a buffer tube problem. Running it slow, it fired great. Rapid fire it seemed the gu...
Read More...
1/1 found this helpful
Most Recent Reviews
WORTH IT not disappointed by hendozier, Verified Owner, April 11, 2026
Great BCG. Got this for my AR build have had failed zero bolts before but it's been a while ordered this one and I love it
Read All 3 Reviews
Color:
EXO
Finish:
Nickel Boron
Gun Make:
AR Platform
Gun Model:
AR-15, M4, M16
Condition:
New

Code: 39X-BCG-RS617-FZ-M164-01-SAH

MPN: FZ-M164-01-SAH

UPC: 881314861842

List: $189.00Save $3.01
$185.99

Product Info for FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer

FailZero Bolt Carrier Group BCG With Hammer, Completely Assembled, EXO Coated, Fits M16/4, Nickel Finish FZ-M164-01-SAHimage

Specifications for FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer:

Manufacturer: FailZero
Color: EXO
Finish: Nickel Boron
Carrier Material: 8620 Steel
Bolt Material: Steel
Gun Make: AR Platform
Gun Model: M16, M4, AR-15
Condition: New

Package Contents:

  • FailZero M16/M4 Bolt Carrier Group w/ Hammer

What firearm models does the manufacturer say FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer is compatible with?

The manufacturer says that FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer is compatible with AR-15, M4, M16

FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer Orderable Models

List of Orderable Models

  • FailZero M16/M4 Bolt Carrier Group BCG w/ Hammer, EXO, FZ-M164-01-SAH , MPN: FZ-M164-01-SAH , UPC: 881314861842 , Code: 39X-BCG-RS617-FZ-M164-01-SAH

FailZero M16/M4 Bolt Carrier Group (BCG) w/ Hammer Unavailable & Discontinued Models

List of Unorderable Models

  • USED FailZero M16/M4 Bolt Carrier Group BCG w/ Hammer, EXO, FZ-M164-01-SAH, EDEMO2, Used, Condition Fair , MPN: FZ-M164-01-SAH-EDEMO2 , Code: 39X-BCG-RS617-FZ-M164-01-SAH-EDEMO2
Compare (0)
1 item has been added
Add at least two items to compare