In Stock
Type
parts
Last Seen
May 20, 2026
Ar-15 Exo Barrel Extension - Ar-15 Exo Barrel Extension Steel Nickel
Sold byBrownells•Posted Apr 28, 2026
Compare prices for FailZero AR-15 Bolt Carrier Group 5.56x45mm NATO Black$29.99
Price and stock data refresh continuously from Brownells.
Deal Summary
- Currently in stock.
- Category: parts
- UPC: 094922014276
- SKU: 100005443
- Brand: Failzero
Price History
Deal Details
M4-type barrel extension has a self-lubricating EXO-treated Nickel Boron finish that aids in smooth, consistent feeding and helps prevent hang-ups. High-tech coating lasts the life of the weapon, and won't rub off, flake off, or gall. Helps dissipate heat for cooler operation, too. Precision machined from 8620 steel to USGI specifications with integral M4-type feed ramps and predrilled locator pin hole. Mfg: Failzero SPECS: 8620 carbon steel, EXO-treated Nickel Boron finish. .998" O.D., 1.168" s
Other Offers for This Product
Active offers from your catalog for FailZero AR-15 Bolt Carrier Group 5.56x45mm NATO Black.
Comparing 6 retailers carrying this product
Lowest Price: $29.99
Highest Price: $179.99
You Save: $150.00
Avg Discount: 12% off
Ar-15 Exo Barrel Extension - Ar-15 Exo Barrel Extension Steel Nickel
FailzeroBrownellsSKU/UPC: 100005443
$29.99
View at Brownells
FZ M16/M4 BCG NO HAMMER BLK
FailzeroBattleHawk ArmorySKU/UPC: 094922014276
$131.95$179.99Save 27%
View at BattleHawk Armory
Fail Zero M16/M4 BCG NO HAMMER BLK
Fail ZeroGrabAGunSKU/UPC: GAG_RES-FZ-M164-01-NH-BLACK
$140.99$199.99Save 30%
View at GrabAGun
FailZero AR-15 Bolt Carrier Group 5.56x45mm NATO Black
FailzeroMidwayUSASKU/UPC: 227075
$162.99
View at MidwayUSA
FailZero M16/M4 Bolt Carrier Group, No Hammer, EXO Nickel Boron Coated, Black Finish FZ-M16/4-01-NH-BLACK
FailzeroHinterland OutfittersSKU/UPC: 71945
$166.98
View at Hinterland Outfitters
FailZero M16/M4 Bolt Carrier Group BCG No Hammer Black FZ-M164-01-NH-BLACK
FailzeroOptics PlanetSKU/UPC: 39X-BCG-RS608-FZ-M164-01-NH-BLACK
$179.99$215.82Save 17%
View at Optics Planet