Primary Arms High Cantilever 30mm Mount - Lower 1/3 Cowitness

Manufactured by Primary Arms
MPN: 910073
Manufactured by Primary Arms
45 Reviews

In Stock

Orders of non-FFL items will ship same day if ordered before 3:30pm CST (M-F). FFL orders will ship within 5 business days if transfer details are provided.

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The High Cantilever Mount will raise most 30MM tube red dot sights (Aimpoint, Vortex, Primary Arms, etc.) to allow for a lower 1/3rd cowitness. A lower 1/3rd co-witness places the red dot in the bottom part of the scope tube when aiming down the iron sights. This allows a less obstructed view of the entire scope tube when using the red dot instead of the iron sights. (Sight in photo not included). If utilizing a red dot magnifier, pair up with standard height flip to side mount such as PAMQF-01 or PAQDMQF-01. This tough mount features a lifetime warranty.
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BrandPrimary Arms
FinishHardcoat Anodized
Mount Compatibility30mm
Mount HeightLower 1/3 - 1.65 in
Optic SeriesClassic
Optic Type30mm
PlatformM1913 Picatinny
California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to

Ratings & Reviews

45 reviews

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I'am so glad that i choose the primary cantilever 30 mm mount ,it fits my ar-15 along with my vortexstrikefire.

Red dot mount


A great value!

PA High cantilever mount


Awesome shipping time, being from Hawaii it usually takes a while. Not with PA, you definitely have more business from me in the future. The mount itself is sturdy and held zero from two range sessions. There were a few cosmetic flaws on the mount and the bolt, but it didn't bother me. As long as it keeps holding zero I'm happy with the mount.

30mm mount


Because of the cantilever style of this mount it leaves plenty of room on the rail for magnifiers and BUS's. Unit holts tight to the optic and locks down tight on the rail. The quality of this mount for the price is hard to beat. PA has continued to impress me with their high quality products at reasonable prices.

High Cantilever 30MM Mount


Bought one for my son, my three son-in-laws,and for myself. Looks great and positions the Strikefire red dot forward to clear the BUIS.Does the job it is intended to do.

Great product, Great Price, Great shipping. A++


Bought this because I also bought the 6X magnifier from Primary Arms. Its a lower 1/3 cowitness height mount (the flip to side) so My vortex strikefire mount was an absolute cowitness and would line up perfectly. With this mount, I get a lower 1/3 cowitness Red dot and mag, and my red dot, magnifier, and iron sight all fits on the reciever rail. Very, very sturdy. I was impressed with how string it is. May even be stronger than the regular mount my strikefire came with. Buy it trust me

30MM Cantilever Mount


Excellent quality



Excellent service as always - literally got the shipment the day after ordering, and I ordered at 2pm. Thanks guys!



Fast shipping and excellent mount. My first PA product since seeing their wares at a local gun shop. Would have bought it there but they didn't have it. Will buy from again.

Lower 1/3 mount


Got this mount for an Aimpoint Comep C3. Mount is nice and sturdy. Always have a positive experience ordering from Primary Arms. Though this mount is more like a lower 2/5 co-witness mount. Could use an extra 2mm of height. Not as high as others I've used, but a good mount nonetheless. Still puts the dot up and out of the way of the iron sights but allows the irons useable when needed.