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Daniel Defense

Daniel Defense 1 O'Clock Offset Picatinny Rail, Black - 03-029-13017

  • Based on 242 reviews
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Availability: Only 9 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, May 4
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Description

Daniel Defense's One O'clock Offset Rail (Rock Lock) is optimized for mounting miniature red dot optics in the O'clock (right-hand) or 11 O'clock (left-hand) positions for quick, non-magnified, transitions when employing magnified primary optics on Rifles with MIL-STD-1913 rails. The geometry allows for zero cheek-weld shift during the transition. This facilitates very fast transitions from magnified to non-magnified optics, and back. The O'clock Offset Rail can also be used to mount variety of lights or other accessories that mount to MIL-STD-1913 rail. By flipping the part upside-down, one can mount light in good position for use with vertical foregrip.

Brand: Daniel Defense


Color: Black


Style: Tactical


Sport: Shooting


Item Weight: 1.1 ounces


Material: Aluminum


Compatible Devices: Rifle


Mounting Type: Picatinny Mount


Night vision: No


Aiming Scope Sight Pin Size: 0.21 Inches


Brand: ‎Daniel Defense


Color: ‎Black


Style: ‎Tactical


Sport: ‎Shooting


Item Weight: ‎1.1 ounces


Material: ‎Aluminum


Compatible Devices: ‎Rifle


Mounting Type: ‎Picatinny Mount


Night vision: ‎No


Aiming Scope Sight Pin Size: ‎0.21 Inches


Weight: ‎5 ounces


Thread Type: ‎Picatinny


Model Name: ‎1 O'Clock Offset Rail (Rock & Lock)


Reticle Type: ‎Red Dot


UPC: ‎735286123173 852548002189


Item Package Dimensions L x W x H: ‎4.61 x 2.17 x 1.42 inches


Package Weight: ‎0.04 Kilograms


Item Dimensions LxWxH: ‎4.61 x 2.17 x 1.42 inches


Brand Name: ‎Daniel Defense


Number of Items: ‎1


Part Number: ‎03-029-13017


Date First Available: May 29, 2013


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, May 4

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Great Off-set Mount
Great mount. It worked perfectly for what I was trying to do. Fits snug and tight, no issues with it coming loose.
Reviewed in the United States on October 20, 2024 by AmazonCustomer
    • Make sure to torque it down, great product
For those of you that are having trouble with it being loose, you really do have to tighten the sucker down. I'd recommend getting some solid leverage on the hex scre with either a vice grips, or improvise something else. When it's fully torqued, it works like a charm. Build materials are high quality and my fastfire iii mounts great and holds zero perfectly. ... show more
Reviewed in the United States on December 31, 2020 by Shelley Ziegler
    • Superior Quality and Construction, Don't waste time on cheaper inferior mounts
You get quality when you pay for it. The price for this rail mount is significantly higher than most other 45 degree rail mounts sold on amazon and the quality significantly higher as well. Solidly built and tight fit on my rifle. I mounted a trijicon rmr on this and it fits perfect. I tried a cheaper 45 degree mount and found that the sight did not line up well with the bore of the rile and had to adjust my cheek weld to get a proper sight picture. Using this mount the sight picture lines up perfectly, i only have to tilt the rifle slightly to see the red dot, I can keep my cheek weld and keep blasting away. Highly recommend this mount. ... show more
Reviewed in the United States on January 19, 2017 by Garret H.
    • Perfect mount to add a red dot
If you want to add a red dot to your primary sight, this is the way to do it. It will fit on any pic rail or weaver style base, as long as your primary sight isn't going to interfere with it. A typical scope, red dot or open sights won't be a problem as long as you have an open space on the rail.
Reviewed in the United States on December 21, 2022 by Jim S
    • Great offset red dot option but needs to be extra tight
Purchased this looking for a higher offset red dot mount similar to T-Rex Arms or Arisaka but I didn't want to bother with plates or spacers. This fit the bill perfectly. My red dot (Holosun 507Cx2) ends up being high enough that it's on the same arc as my LPVO, meaning I don't need to adjust my neck or cheek weld after rotating the gun to use the red dot. Very well made and the angle is engineered so you can mount from the flat top or from a side rail and get the same viewing angle. I'm definitely glad I went with this rather than a 45 degree offset mount. The price point on this is much better than the other premium options. Only downside was the install. I, like others, was disappointed that it wobbled quite badly when first installed, even though I tightened the screw to the stop. I very nearly initiated a return after repeating the same problem on a number of different rails of many kinds, including flat top, side-mount, aluminum and even polymer. I pulled it off only to notice what appeared to be a blockage in the bottom of the screw channel. It turned out to be metal shavings from the machining process. Once I removed this I was able to get that extra half to full turn needed to make the mount rock solid. As others have said, torque this thing down and it should be good to go. ... show more
Reviewed in the United States on April 3, 2021 by Aphek
    • Exactly Right
I needed an offset mount that would allow mounting a Vortex Venom as a secondary sight to a scope with a 50mm objective, and getting the Venom mounted out far enough to allow a clear field of view around the scope was the primary objective when I made the purchase. The DD 1 O'clock mount is perfect. First of all, the "1 O'clock" position is entirely dependent on which rifle rail it's mounted on. In other words, if you want your sight to be in the 1 O'clock position, the DD mount must be attached to the right side rail of the rifle. I shoot left handed, so this mount puts my Venom in approximately the 11 O'clock position when the mount is attached to the left side rail of the rifle. This means I only have to cant the rifle slightly in order to obtain a site picture on the Venom, and my field of view through the Venom is unobstructed by the either the scopes objective lens bell, or the parallax knob on the scope's left side. For those who complain about the mount being loose - This is a one-piece mount. There is no loose, flopping clamp that tightens with thumb pressure. The DD mount is one solid piece and requires some effort be applied when tightening the mounting bolt. Some may prefer to tighten their site mounts by hand. If you want that, buy something else. If you want a solid mount that you know will hold your site securely, this is the mount you want. ... show more
Reviewed in the United States on May 11, 2021 by Chulin
    • Good brand, poor design
Another offset red dot sight mount on the market that didn't get the angle of the dangle right. It's too far canted over so when you turn over to look through it, it just doesn't feel right. The rds is more to the right than it should be, it needs to be more up and down veritcally and leaning back up to the left. Unfortunate from this company that they released the same design as other cheap alternatives to the correct angle of the Arisaka and Trex arms offest mounts. The finish was alright, kinda like a phosphate. Good value for the money I just think they should redesign it to be more ergonomic. ... show more
Reviewed in the United States on April 3, 2025 by Jay Dee
    • Great at what it does
Daniel Defense makes some of the best equipment in the world. This is, as expected, as functional and utilitarian as it can be. The proprietary attachment is simple to use and the off-set is the perfect height for my RMR. Can't say enough good about everything I've ever purchased from Daniel Defense. ... show more
Reviewed in the United States on January 13, 2021 by George Williams

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