The Ballistic Advantage .875-Inch Low-Profile Gas Block (Ballistic Advantage part no. BAPA100042) is a low-profile gas block bored to fit barrels with a .875-inch gas journal. Ballistic Advantage builds its gas system parts to sit low enough to clear a free-float handguard, so it stays hidden and out of the way on a clean AR build while doing the simple, essential job of metering gas from the barrel to cycle the bolt carrier group reliably.

Key Specifications

• Bored to a .875-inch inside diameter, sized for barrels with a .875-inch gas block journal.
• A low-profile (Lo-Pro) design that sits flush enough to clear a free-float handguard without contact.
• Meters the propellant gas tapped from the barrel’s gas port to cycle the bolt carrier group.

Frequently Asked Questions

What barrel gas journal does this fit? It’s bored to a .875-inch inside diameter, matching barrels with a .875-inch gas block journal.

Will it fit under my free-float handguard? Yes, it uses a low-profile design sized to clear a free-float handguard without contact.

Buy the Ballistic Advantage .875-Inch Low-Profile Gas Block

Order this gas block from our Lubbock, Texas gun shop and we’ll have it ready to ship to your door. Shop the full Ballistic Advantage lineup or browse our complete AR gas system parts selection.