Upgrade your AR build with this 0.750" Low Profile Railed Gas Block , designed for .223/5.56 barrels. Ideal for builds where a compact, lightweight profile is critical, this gas block features a top Picatinny rail section for mounting high-profile front sights or other accessories. Note: This gas block does not align with receiver-height, same-plane sights. For best results, use with high-profile front sights Key Features: Fits .223/5.56 barrels with 0.750" diameter at the gas journal Top Picatinny rail for accessory or sight mounting Low-profile design for streamlined builds Durable steel construction for long-lasting performance Perfect for custom rifles , pistols, or SBRs requiring compact gas system components