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Sentry 7 Set Screw Adjustable Gas Block
$139.99Sentry .750″ Set Screw Version – Melonite QPQ Finish
.400″ Set Screw Spacing
1.3 oz
US PATENT NO. 9,410,756
Note- If you have a barrel with no dimple or one dimple under the gas…
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Sentry 7 Clamp On Adjustable Gas Block
$139.99Sentry .750″ Clamp On Version – Melonite QPQ Finish
1.3 oz
US PATENT NO. 9,410,756
– 15-position adjustability from 0 – .125″ port opening
– Metering screw and screw bore design allows repeatability and reliability…
