Superlative Arms Direct Impingement AR-15 Bolt Carrier LH Black

The Superlative Arms Direct Impingement AR-15 Bolt Carrier LH Black is a complete direct-impingement bolt carrier from Superlative Arms (brand part no. SABC-15-DI-LFD-DLC) machined for a left-hand (LH), left-eject AR-15 upper receiver. It is built for standard gas-impingement AR-15 uppers rather than a piston-driven system, and it carries a black, low-friction diamond-like carbon (DLC) coating.

Key Specifications

• It is a direct impingement bolt carrier, built for standard gas-impingement AR-15 uppers rather than a piston-driven system.
• It is machined for a left-hand (LH), left-eject AR-15 upper receiver, matching the reversed ejection port and bolt rotation of a left-handed build.
• It has a black finish from its diamond-like carbon (DLC) coating, indicated by the DLC suffix in its manufacturer part number.
• Diamond-like carbon coating is prized for a low-friction, high-hardness surface that helps a bolt carrier group run cleaner between cleanings.
• It ships as a complete bolt carrier assembly, not a stripped carrier requiring additional internal parts.
• It is intended specifically for direct-impingement uppers and is not interchangeable with a piston-driven AR-15 system.

Frequently Asked Questions

Will this work in a standard right-hand AR-15? No — it is machined specifically for a left-hand (left-eject) upper receiver, so it will not function correctly in a standard right-hand AR-15 upper.

Does this work with a piston-driven upper? No — it is a direct-impingement bolt carrier built for standard gas-impingement AR-15 uppers, not a piston conversion.

What does the DLC coating do? Diamond-like carbon is a very hard, low-friction coating that helps the bolt carrier group cycle smoothly and stay cleaner between cleanings.

Buy the Superlative Arms Direct Impingement AR-15 Bolt Carrier LH Black

Order the Superlative Arms LH Direct Impingement Bolt Carrier through our AR Bolt Carrier Groups selection at Schaefer Defense and we’ll ship it fast, fully insured, from our Lubbock, TX gun shop.