You can hold Trijicon HD Night Sights, fits S&W M&P Shield, Yellow Outline/Green Tritium Lamps (600855) for a maximum of 15 minutes.

CMMG 55DA3AC AR Gas Block Assembly .625″ ID Low Profile

CMMG, Gas Block Kit, .625" ID, Low Profile, Black

MPN: 55DA3AC

Availability Only 1 left in stock

$39.95

.625″ Low profile gas block, includes installation screws. Made of 4140 moly chrome. Replace your A2 site with this gas block or add a free float rail system to cover your gas block.

Specifications
MPN 55DA3AC
Materials 4141 Chrome Moly Steel
Size .625"
Type AR Gas Block Assembly
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