SLR Rifleworks Sentry 6 AR-15 Adjustable Gas Block - Set Screw - .625"

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.625" x 1", Tan

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.625" x 1", Gray

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.936" x 1", Tan

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.936" x 1", Black

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Tan

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Gray

Superlative Arms Solid Set Screw Direct Impingement Adjustable Gas Block 0.875" x 1", Black