Superlative Arms Rifle-Length Piston System w/Solid Set Screw Gas Block 0.625" x 1", Black

Perfect for custom builds, the Superlative Arms Bleed Off gas piston system fine-tune performance by venting gas forward, avoiding the backpressure and carbon buildup of traditional blocks.Gas adjustment (patented) - features 30 fixed positions located at the front of the blockBleed-off port (patented) - located at the front of the block, designed to vent forward, directing emissions away from the operator0.625 inches x 1 inches solid set screw QPQ melonite 416 stainless steel piston gas blockRi