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SI-Defense Ambi 223/5.56 Receiver Sets

Posted on February 23rd, 2015 by ar15news

**Update: I may have gotten ahead of myself here. Apparently I mistook the “Related Products” section where they say Add To Cart as the Add To Cart for the coming soon 5.56 Ambi Sets. I will let you know as soon as these receivers are officially available for purchase.**

One of my favorite products that I’ve recently used in a build is the new SI-Defense Ambi .308 billet set. The Mirrored Ambi Controls are seriously the best thing since sliced bread. Of course as soon as they introduced the .308 billet set the #1 question was….when are you releasing the .223/5.56 set? Well, the wait is finally over! SI-Defense Full Ambi .223/5.56 billet sets are now available for purchase on the SI-Defense website. They feature the exact same Mirrored Ambi Controls that the .308 set which includes the same Bolt Catch / Release lever on both sides and the same Magazine Release button on both sides. Craziest part is the set costs less than many of the other billet receivers sets on the market that aren’t even ambi. Take a look at the pics and then head on over to to put in your order today. 

SI-Defense 556 Mirrored Ambi Set 3SI-Defense 556 Mirrored Ambi Set 1SI-Defense 556 Mirrored Ambi Set 2

AMBI SI-D 223/556 Receiver Set
–  Material: 7075-T6 Billet Aluminum
–  Finish: Deep Black Hardcoat Anodize
–  Patent Pending Mirrored Ambidextrous Controls
–  Ambidextrous Takedown and Pivot pin locations
–  Bore is reamed for superior accuracy
–  M4 Feedramps
–  Front magwell grip grooves
–  Ambi index finger grooves
–  Sleek and stylish shell deflector
–  Threaded forward assist hole
–  Quick release dust cover assembly

The SI Defense .223/56 receiver set is the ultimate ambidextrous receiver set. The ambidextrous bolt catch release and magazine release are exactly mirrored identically on both sides of the receiver. These features are unique and unparalleled in the industry and were engineered to accommodate the left and right handed shooter. Special attention was given to incorporate smooth transitions throughout the receiver set, giving it a feel of confidence and reliability. Bore is machined perpendicularly and concentrically for superior accuracy. Receiver Set Includes: Dust cover, Ambi bolt catch, and Ambi mag release button.

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