20 of 20 Items
20 of 20 Items
Top AR optics and sights from Sig Sauer, Holosun, Magpul and more.
A reflex sight and a solid pair of iron sights is what finishes off your custom AR build. Without it, your new black rifle or pistol is nothing more than a safe queen or wall hanger. We've partnered with three of the country's top optics makers - Sig, Holosun, and Magpul - to provide battle-ready backup irons and some of the highest quality reflex red dots you'll ever find.
Holosun is a big name for two reasons: Quality and price. Their reflex sights sport anodized, mil-spec alloy aluminum housings with multi-coated lenses and easy MOA adjustments. Our staff, with personal experience handling Holosun optics downrange, agrees: Their optics provide some of the highest clarity, the best reticles, and the lightest and toughest units at a fraction of more expensive options from Aimpoint and EOTech. Check out their X2 MRS for your 1911 or Glock, or their MRS 2-MOA rifle red dot for your AR. Did we mention these units can run entirely on solar power?
Sig Sauer needs no introduction. They've become a storied gunmaker whose handguns and rifles have seen service and combat for decades. Now they're broaching the red dot optics market with some truly high-quality but surprisingly affordable units. The Romeo5 is a hyper-accurate, compact reflex sight boasting no parallax error and up to 50,000 hours of battery life. Need some red dot action on your favorite Sig handgun or other piece? Check out the Romeo1 PRO, one of the smallest handgun optics on the market.
Show up at the range with your AR's top rails sporting no back-up irons, and you might be laughed off the firing line. Trust us, you're going to want Magpul's BUIS sights, anyway: They're incredibly tough, compact, and affordable. Providing simply windage and elevation adjustments for a quick zero, they fold up and down with a flick of the wrist, locking into place without any tools.
DISCLAIMER: If you are new to the world of DIY gun building, you likely have a lot of questions and rightfully so. It’s an area that has a lot of questions that, without the correct answers, could have some serious implications. At GunBuilders.com, we are by no means providing this content on our website to serve as legal advice or legal counsel. We encourage each and every builder to perform their own research around their respective State laws as well as educating themselves on the Federal laws. When performing your own research, please be sure that you are getting your information from a reliable source.
We are a national retailer of individual components and not all products depicted on this website are legal in every state. Shipping of various products found on this website are prohibited to some states (such as California, Connecticut, District of Columbia, Hawaii, New Jersey, New York, Rhode Island, and Washington). The information, pictures, text or products presented on this website are not a representation by us, and should not be understood by you, that any product or completed firearm is legal to assemble or own in your state of residence. We encourage each and every builder to perform their own research about the state and federal laws that apply to them. It is your responsibility to understand the law and we encourage you to consult with an attorney or your local ATF representative.