Low Profile Gas Block
YHM-9381A
This gas block replaces your existing front sight to provide a simple, low profile design that can be used to mount a rifle length forearm to a carbine length barrel. It is mounted by the use of two set screws. Manufactured from high quality steel and finished with a mil. spec. phosphate coating.
 

Two Piece Gas Block
YHM-9390A
This gas block replaces your existing front sight and allows the user to mount accessories to its two Picatinny rails. It is mounted by the use of four socket head cap screws for easy installation. This gas block allows the mounting of our forearms without the removal of your muzzle accessory. Purchase our dovetail mounted flip front sight (YHM-9584) or our solid front sight (YHM-9495) to retain your iron sights. Made from high quality steel and finished with a Mil. Spec. phosphate coating.

Railed Gas Block With Bayonet Lug
YHM-9836A
This gas block replaces your existing front sight and allows the user to mount accessories to its top Picatinny rail while retaining the bayonet lug and sling mount. It is mounted by the use of four socket head cap screws for easy installation. This gas block allows the mounting of our forearms without the removal of your muzzle accessory. Purchase our dovetail mounted flip front sight (YHM-9584) or our solid front sight (YHM-9495) to retain your iron sights. Made from high quality steel and finished with a Mil. Spec. phosphate coating

Single Rail Gas Block
This gas block replaces your existing front sight and allows the use of dovetail mounted accessories. Installs easily with two cap screws onto barrels of .750 or .625 diameter under the front sight. Purchase our dovetail mounted flip front sight (YHM-9584) or our solid front sight (YHM-9495) to retain your iron sights. Made from high quality steel and finished with a Mil. Spec. phosphate coating.

Front Flip-up Sight & Gas Block  w/  Bayonet Lug
YHM-9394
This front sight is all steel construction for superior strength in demanding conditions. The flip sight is easily concealed with the push of a button and locks in the deployed position. This sight accepts all standard AR sight posts and hardware (Included). With this setup you get the convenience of a flip front sight with the same weight as a standard AR sight tower. This sight’s two-piece design allows it to be mounted on firearms with pinned and welded muzzle accessories. It mounts easily and securely with four cap screws.

Front Flip-up Sight & Gas Block w/o Bayonet Lug
YHM-9395
This front sight is all steel construction for superior strength in demanding conditions. The flip sight is easily concealed with the push of a button and locks in the deployed position. This sight accepts all standard AR sight posts and hardware (Included). With this setup you get the convenience of a flip front sight with the same weight as a standard AR sight tower. This sight’s two-piece design allows it to be mounted on firearms with pinned and welded muzzle accessories. It mounts easily and securely with four cap screws.

Front Flip-up Sight & Gas Block With Bottom Rail
YHM-9835A
This sight adds the convenience of a flip sight along with the versatility of a bottom Picatinny rail. All steel construction for superior strength in demanding conditions. The flip sight is easily concealed with the push of a button and locks in the deployed position. This sight accepts all standard AR sight posts and hardware (included). The Picatinny bottom rail is great for laser sights, flashlights, etc. This sight’s two-piece design allows it to be mounted on firearms with pinned and welded muzzle accessories. It mounts easily and securely with four cap screws.