FailZero Bolt Carrier Group - M4/M16 - EXO - 009-FZM16/4-01-NH
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- 90-day no-hassle returns policy
- FailZero Lifetime Warranty! what it covers
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Product description
When you need a ready to install a Bolt and Carrier System, the M16/M4 BCG Kit might be for you.
All critical parts are treated with EXO Technology, a revolutionary surface technology that provides permanent dry lubricity, radically improves the performance of your AR-15 and eliminates the need to apply oil or grease to treated parts for the life of the weapon. No need for oil or grease, the EXO Technology takes care of that.
Coated parts include:
- Bolt
- Bolt Carrier
- Extractor
- Cam Pin
- Carrier Key
- Firing Pin
FEATURES:
- Completely assembled and ready to install on an M16/4 Bolt and Carrier System; Drops right in
- Kit includes six critical parts that are treated with EXO Technology; Eliminates the need to apply oil or grease to treated parts including the bolt, bolt carrier, hammer, extractor, cam pin and carrier key.
- Kit includes the firing pin; Bonus
SPECIFICATIONS:
Finish: EXO Technology in black
No need for oil or grease, the EXO Technology takes care of that.
Customer reviews 1
AT3 Tactical · We are glad to hear that you are pleased with the quality of your purchase and service provided.
Questions & Answers 1
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What are all the calibers that I can use on an a R 15 M4 platform?
Herbert · Dec 11, 2025AT3 Support Team — Hi! The FailZero Bolt Carrier Group – M4/M16 – EXO is designed for standard AR-15/M4 platforms in .223/5.56 NATO and works reliably with common AR-15 calibers like .300 Blackout, 6.5 Grendel, and 6.8 SPC (with matching barrels and bolts). It's not for pistol calibers or big-bore ARs, stick to 5.56-based setups for best results.
Warranty & returns
FailZero Lifetime Warranty!
FailZero Limited Lifetime Warranty
- The FailZero warranty covers products of UCT Coatings, Inc. for the failure of the EXO surface against chipping, peeling, or wear through that prevents the weapon from functioning or for the failure of the part.
- The warranty is of unlimited duration. UCT will recoat the product free of charge including return shipping costs.
- This warranty does not cover customer abuse at any time.
- UCT Coatings, Inc. shall not be responsible in any manner whatsoever for malfunctioning of the firearm, or for physical injury or property damage, resulting in whole or in part from:
- Criminal or negligent discharge
- Improper or careless handling
- Unauthorized modifications
- Defective, improperly hand-loaded, or reloaded ammunition
- Neglect
- Other influences beyond our direct and immediate control.
- This limitation applies regardless of whether liability is asserted on the basis of contract, negligence, or strict liability (including any failure to warn).
- Under no circumstances shall UCT Coatings, Inc. be liable for incidental or consequential damages, such as loss of use of property, commercial loss, and loss of earnings or profits.
Disclaimer: Manufacturer’s warranty is subject to change without prior notice.
90-day no-hassle returns
The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.
If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.
