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NEW!! SI-Defense Releases Full Ambi Billet .308 Receiver Set

Posted on October 30th, 2014 by ar15news

In the AR world there are lots of partially ambi receiver sets but that typically just means that they have an ambi bolt release lever. To me thats not really an ambi receiver because you’re still multiple other features that aren’t ambi. I know I’m obviously not the first to feel like that and I can guarantee you that is exactly what SI-Defense was thinking when they started designing their new Full Ambi Billet .308 Receiver Set.

One of the first things you’ll notice is that both sides of the lower receiver look exactly the same. The brain trust at SI-Defense did this on purpose to ensure your body gets used to doing the same exact thing whether you’re shooting with your right or left hand. These mirrored features include an Ambi Mag Release, Ambi Index Finger Grooves and a complete Bolt Catch Assembly on both sides giving you a true Ambi Bolt Hold function which is absolutely priceless when clearing malfunctions (I know you’ve heard me preach about that before).

SI Defense Ambi 308 Billet Set 1

SI Defense Ambi 308 Billet Set 2

Upon further inspection you’ll also see that they have also included a Pivot Pin Spring Housing on both sides of the lower receiver. That’s right! This new receiver set even offers an ambi Pivot Pin and Takedown Pin system which is something I don’t remember ever seeing before. A couple of other neat features are the Quick Release Dust Cover Assembly and a Threaded Forward Assist Pin Hole.

SI Defense Ambi 308 Billet Set 3SI Defense Ambi 308 Billet Set 3

So as you can see, this is a very well thought out design that looks just as good. I’ve also heard there will be an AR-15 version of this available as well so keep an eye out for that. SI-Defense is currently taking pre-orders for this new Ambi .308 Billet Set. Head on over to their brand new website at or callĀ 406-752-4253 to place your pre-order.

**The receiver set includes dust cover, ambi bolt catch, ambi mag release. Forward assist, takedown pins and ambi selector not included but are available for sale in the Parts and Accessories section of their web store.

SI Defense Ambi 308 Billet Set 6

For more pictures of the new SI-Defense products and to keep up all things related to SI-Defense but sure to follow them on both Instagram and Facebook.

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