.625" gas blocks

AR/M4 AR General Discussion
1

What options are out there for .625" gas blocks? Are there any that are railed?

2

Not many with single-rail :confused:

Brownells sells the Doublestar for $30

http://www.brownells.com/.aspx/pid=29340/Product/AR-15-M16-PICATINNY-RAIL-GAS-BLOCK

Ables for $27

http://www.ableammo.com/catalog/product_info.php?products_id=109669

Class3 has them to $27

http://www.class3weapons.com/DSTAR_AR452_LIGHTWEIGHT_PIC_GAS_BLOCK_p/56372.htm

JT has them

http://jtdistributing.net/store/product1358.html

JoeBob has the YHM $50

http://www.joeboboutfitters.com/Yankee_Hill_Single_Rail_Gas_Block_625_p/yhm-9386a.htm

3

http://www.midwayusa.com/product/146830/doublestar-gas-block-2-picatinny-rail-ar-15-lightweight-barrel-625-inside-diameter-aluminum-matte

4

Are there any adjustable .625 blocks available?

5

http://www.bravocompanyusa.com/LaRue-Tactical-Low-Profile-Gas-Block-LT-202-p/larue%20tactical%20lt-202%20625.htm