SK-Skeletonized AR-15 80% Builder Set
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SK-Skeletonized AR-15 80% Builder Set
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SK-Skeletonized AR-15 80% Builder Set
Starts at $409.94 Add to cart
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SK-Ultra Skeleton AR-15 80% Builder Set New! .yith-wcbm-badge-5619{--badge-discount-text : 'Discount';--badge-up-to-text : 'Up to';--badge-primary-color : #006eff;--badge-text-color : #ffffff;--badge-secondary-color : #004299;--badge-secondary-light-color : #004db2;--badge-secondary-dark-color : #00377f;--badge-tertiary-color : #002c66;--badge-triadic-positive-color : hsl(304 , 100% , 50% );--badge-triadic-negative-color : hsl(124 , 100% , 50% );--badge-analogous-positive-color : hsl(244 , 100% , 50% );--badge-analogous-negative-color : hsl(184 , 100% , 50% );--badge-complementary-color : hsl(394 , 100% , 50% );} .yith-wcbm-badge.yith-wcbm-badge-css-8 { box-sizing: border-box; background-color: transparent; width: 65px !important; height: 65px !important; overflow: hidden; } .yith-wcbm-badge.yith-wcbm-badge-css-8 div.yith-wcbm-css-s1 { position: absolute; z-index: 12; top: 0; left: 2px; border-left: 3px solid transparent; width: 10px; border-bottom: 4px solid var(--badge-secondary-color, #246587); } .yith-wcbm-badge.yith-wcbm-badge-css-8 div.yith-wcbm-css-s2 { position: absolute; z-index: 12; bottom: 2px; right: 0px; border-bottom: 3px solid transparent; height: 10px; border-left: 4px solid var(--badge-secondary-color, #246587); } .yith-wcbm-badge.yith-wcbm-badge-css-8 div.yith-wcbm-css-text { position: absolute; z-index: 14; -webkit-transform: rotate(45deg) translate(-50%, -125%); -ms-transform: rotate(45deg) translate(-50%, -125%); transform: rotate(45deg) translate(-50%, -125%); transform-origin: top left; top: 50%; left: 50%; width: 110px; height: 17px; } .yith-wcbm-badge.yith-wcbm-badge-css-8 div.yith-wcbm-css-text .yith-wcbm-badge-text { position: absolute; width: 100%; transform: translate(-50%, -50%); top: 40%; left: 50%; background: var(--badge-primary-color, #3a86c4); } .yith-wcbm-badge.yith-wcbm-badge-css-8.yith-wcbm-badge-css--flip-vertical div.yith-wcbm-badge-text{ transform: scaleY(-1) translate(-50%, 50%); top: 40%; } .yith-wcbm-badge.yith-wcbm-badge-css-8.yith-wcbm-badge-css--flip-horizontal div.yith-wcbm-badge-text{ transform: scaleX(-1) translate(50%, -50%); } .yith-wcbm-badge.yith-wcbm-badge-css-8.yith-wcbm-badge-css--flip-both div.yith-wcbm-badge-text { transform: scale(-1) translate(50%, 50%); top: 40%; } SK-Ultra Skeleton AR-15 80% Builder Set Starts at $419.94

SK-Skeletonized AR-15 80% Builder Set

Starts at $409.94

Get Started on your next custom Rifle or Pistol with this billet SK-Skeletonized AR-15 80% Builder Set with Options such as:

– 7075-T6 (when Available)
– Ambidextrous Bolt Release
– Several Cerakote Options
– Color matching Buffer Tube
– Handguard Style/Length
– Choice of Selector Engravings

Additional Product Details, Features and Options are listed below Add-to-Cart.

(20 customer reviews)

6061 or 7075 *

Handguard/Rail *

Ambi Bolt Release for ARs

Coating Options *

Selector Engravings

Product price: $409.94
Total options:
Order total:
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Questions? Request a Call Back

Customization:

Our primary goal is to build top quality and stylish CUSTOM parts and kits, so we have added a few more Options for you to consider. IF you would like each part (Upper, Lower and HG) to be different colors, then please let us know. We want to provide these builder sets the way you want to receive them which is ready to complete and assemble. Please e-mail us to ask!

SK-Skeletonized AR-15 80% Builder Set includes:
– Built to mil-spec dimensional standards
– Ltd lifetime warranty against manufacturer defects

Upper Receiver:
– CNC Machined from 6061-T6 aluminum
– Sleek/low-weight No-FA slick-side design
– Close in slim-line case deflector
– Accepts standard dust cover, pin and spring
– Skeleton Upper Receiver Weight = 6.6 oz

Lower Receiver:
– CNC Machined from 6061-T6 aluminum
– Rear lug pocket already machined
– Integral trigger guard for added strength
– Machined Mag-well with wide flare
– Bolt Release hole tapped (Pin incl)
– Rear TD Detent tapped (Screw incl)
– Skeletonized Lower Receiver Weight = 7.6 oz

Handguard/Rail:
– CNC machined from 6061-T6 aluminum
– Available in (3) styles and multiple lengths
– 1-1/4 x 18 TPI steel Barrel Nut included
– Substitutions Possible with Customer Consent

Options:
– 7075-T6 Billet Aluminum (when Available)
– Choice of Selector Engravings or None
– Color matched Buffer Tube
– Ambi Bolt Release
– Black Anodized
– Standard Cerakote colors:

Burnt Bronze, Magpul FDE, Graphite Black, OD Green or Tungsten
Distressed Burnt Bronze, Distressed Magpul FDE or Distressed Gun Metal

– or a Custom Cerakote Color (View Here)

Note: Minor fitment may be needed for coated parts due to variances in coating thickness.

Shipping/Restrictions:

Although not generally restricted, you should refer questions regarding manufacture, NFA Regulations, and individual state regulations to the BATFE or your local authorities, or obtain legal guidance prior to manufacturing.

No FFL Required! This billet SK-Skeletonized AR-15 80% Builder Set can be securely purchased from our website, and shipped direct to your home or business. (See the Shipping/Returns webpage for updated Shipping Restrictions)

20 reviews for SK-Skeletonized AR-15 80% Builder Set

  1. Anonymous (verified owner) –

  2. Justin V. (verified owner) –

    Coolest billet lower on the market. I can always count on 80lowers.com to provide quality products! Thanks, guys.

  3. Heather (verified owner) –

  4. Jeffery H. (verified owner) –

    Definitely happy with the product, i realize it had to be machined, but for as long as it took to get it i was really hoping to get something a little extra like maybe some stickers or something. In my trade if i take a little too long on something I’ll throw in a boot for their boat top or maybe some spare parts that way customer feels like he’s taken care of, but i can’t say anything bad very happy with the quality of the product i will definitely be ordering something else soon.

  5. Anonymous (verified owner) –

  6. Mark (verified owner) –

    Great machining and very lightweight.

  7. Z C (verified owner) –

    Small blemish in the lower, doesn’t look like it will hurt functionality. Other than that it looks good.

  8. Traven S. (verified owner) –

    Can’t wait to build it. Had to wait a few weeks for the items to ship, however the wait was worth it because of the quality of the parts. Will definitely order more in the future.

  9. Kenneth N. (verified owner) –

    This will be will be my first builds going to be a lot of fun

  10. TJ R. (verified owner) –

  11. Robert A. (verified owner) –

    Nice quality, lower as ordered

  12. Anonymous (verified owner) –

    Recieved the unit on time and the machining and finish look incredible. Can’t wait to run it.

  13. Greg M. (verified owner) –

    Both the machining and the Cerakote looks amazing. Very happy.

  14. Gene T. (verified owner) –

    Beautiful piece of metal. The shipping was quick and the piece is amazing. Buy one, you will be glad you did.

  15. Rufino R. (verified owner) –

    Overall really happy. The front retaining pin hole is usually full of shavings, i recommend cleaning it out before you go and stick spring and detent as it will get stuck i ruined one lower that way but otherwise it has good finish matches up perfectly with my upper.

  16. Colin C. (verified owner) –

  17. Willie M. (verified owner) –

    The products that I purchase from you definitely exceeded the quality that I was expecting.I am more than satisfied with your product. And as far as your customer service goes I was totally unaware of your working hours. I called on a day that you were closed, it took a couple of hours but I received a call back. The individual that called me back, walked me through the process of ordering, he even sent me a link to the product that I wanted to order. Even though I called on a day off this individual took the time off from his day, and helped me with the process of ordering. Your customer service is above and beyond.
    Thank you, from a satisfied customer.

  18. Verified Buyer (verified owner) –

    Excellent part, machined at home great, and weighed out great.

    My only gripe, and not even a gripe……….I wish they had a .308 lower in ultra skeletonized, and that this one had some lightening done in the trigger guard.

    Nothing that’s a deal breaker at all though!

  19. Maximilian W. (verified owner) –

  20. Brandon R. (verified owner) –

    Amazing Lower, great price, super lightweight for an ar10 lower. And very cool skeletonized work to enhance the a look of any build.

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