(0) 
Newsletter
Black
1.74
Steel
Flip-Up
AR-15
The AR-15 Flip-Up Gas Block Front Sight from YANKEE HILL MACHINE CO., INC. is designed for reliability and quick deployment in emergency situations. Crafted from rugged steel, this sight is built to withstand the demands of any shooting environment.
This Gas Block Flip Sight is not only functional but also designed to deploy quickly, ensuring you are always prepared. Upgrade your firearm today with this essential accessory!
Black
1.74
Steel
Flip-Up
AR-15
Good flip-up front sight by YHM 09/07/2014
I have this sight on my DPMS Oracle with Magpul MOE hand guards and Magpul MBUS sight on the rear. My rifle came with a railed gas block that is not at the same level as the rails in the upper receiver.
With this setup, the issue was that the YHM sight would touch the front of the Magpul hand guards, therefore wouldn't lay flat. My solution was to simply turn it around, so when not in use, I push the sight forward instead of backwards as it should be. I'm left-handed, so this actually works better for me, as I do not need to take my left hand off the grip and can push the button and flip it down with my right hand. But if you want to install it the "right" way, watch for your hand guards, especially if Magpul MOEs.
I also suggest putting a bit of lock tight when you install it. Mine came off after shooting a 30-round mag, but my fault for not tightening hard enough. With blue lock tight it has not moved in 210 rounds.
Sighting was pretty simple with an front sight tool; works perfect with my Magpul rear sight and the red dot I have on that rifle (co-witness perfect).
Very good piece of hardware that works well for my needs.
Great Set for an offset gas block mount! 12/02/2013
I put this front sight on the gas block and its dual apature brother for the rear sight on a DPMS Oracle and they worked perfectly. It was sighted in out to 200 yds with a few rounds still in a 20rnd mag. I have no intentions of removing them and did not lock tight but used pliers to add slightly more pressure to the thumb bolt. I have roughly a thousand rounds through it with no loosening. Also turned the front sight 180deg. to fold forward so it would fold all the way down because it hits the hand guard the other way.
We encountered an error while loading this content. Please refresh the page to continue. If the issue persists, contact our customer support.
to Brownells UK, your destination for anything gun related. With our roots in a genuine passion for firearms, we bring you an unmatched selection of Gun Parts, Firearm Accessories, Gunsmithing Tools, Scopes & Red Dot Sights and Expert Knowledge.
Whether you're looking to maintain, repair, or upgrade, we've got what you need!
For Shooters, By Shooters
We share your enthusiasm and know exactly what you're looking for because we're part of the community.
Massive Selection
From the essentials to the unique, find everything under one roof.
Our blend of tradition and innovation
Shop with the convenience of modern technology, backed by a legacy of experience.
Browse our collection and discover why we're the trusted name in shooting sports & hunting.
© 2025 Brownells UK
Part of the Brownells Europe Group
Classical view
Mobile view
Help and contact
