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American Built Arms Company Pro 5.56 Bolt Carrier Nickel Boron Mil-Spec Silver
Sold byOptics Planet•Posted Apr 27, 2026
$105.99
$109.99
You save $4.00 (4% off)
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Deal Summary
- Currently in stock.
- Caliber: 223/5.56
- Category: parts
Price History
Deal Details
American Built Arms Company Pro 5.56 Bolt Carrier Nickel Boron Mil-Spec Silver. 56 Bolt Carrier Nickel Boron Mil-Spec. This item only includes a bolt carrier; it is not a complete Bolt Carrier Group BCG. American Built Arms Company built these Bolt Carrier Groups from rugged 8620 steel in an M-16 style that functions better in semi-auto or fully-automatic rifles. The American Built Arms Company Pro Mil-Spec 5.56x45mm NATO Bolt Carrier also includes a 4130 steel gas key with screws for installati