6mm ARC AR-15 Parts by AT3 Tactical

AT3 Tactical provides high-quality, US-made components for precision rifles chambered in 6mm ARC.  AT3 bolt carrier groups are compatible with 6.5 Grendel and 6mm ARC.

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AT3 Tactical AT-15 M-LOK Builder Set - Lower, Upper, and SPEAR M-LOK Handguard
(9)

AT3™ AT-15 M-LOK Builder Set – Anodized and Cerakote
25 Options
from $260.99
from $221.84
Out of Stock
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AT3 Tactical AT-15 Quad Rail Builder Set - Lower, Upper, and Pro Quad Rail Handguard
(6)

AT3™ AT-15 Quad Rail Builder Set – Anodized and Cerakote
32 Options
from $264.99
from $225.24
Out of Stock
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6.5 Grendel and 6mm ARC Bolt Carrier
(12)

AT3™ AR-15 Nickel Boron Bolt Carrier Group – 6.5 Grendel/6mm ARC
$149.99
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$127.49
Out of Stock
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AT3 Tactical 3-Port Muzzle Brake
(25)

AT3™ AR-15 3-Port Muzzle Brake – 5/8×24 – .300 BLK/.308 Win – Crush Washer Included
$32.99
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$28.04
Out of Stock
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AT3™ AR-15 Bolt Carrier Group - 6.5 Grendel Type II - Black Nitride
(4)

AT3™ AR-15 Bolt Carrier Group – 6.5 Grendel/6mm ARC – Black Nitride
$136.99
Only
$116.44
Out of Stock
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