UTG PRO® AR15 Ambi Billet Receiver Set

Made in USA
New Arrival

UTG PRO® AR15 Ambi Billet Receiver Set

⚠️ Leapers, Inc. does not sell lower receivers directly to the end-user. All transfers of lower receivers must go through a federal firearms license holder (FFL). To our dealers with an FFL, please submit a copy of your FFL to ffl@leapers.com to be kept on file. All lower receivers ship to the premise address indicated on the received FFL. See “Terms & Conditions” for more details.

in stock
  • Proudly Designed and Made in USA
  • True Ambidextrous Lower with Left and Right Side Bolt Catch, Bolt Release, and Magazine Release
  • Mirrored Battery of Arms, Manipulation of All Ambi. Controls is Nearly Identical in Positioning and Usage
  • Precision Machined from 7075-T6 Billet and Finished in Type III Class II Matte Black Hard Coat Anodize
  • Matched Receiver Tight with Optional Upper to Lower Tensioning Screw Included
  • Overall Lightweight with Dehorned Corners and Melted Contours
  • Multi-Caliber Marked and Compatible with Most Mil-spec and Aftermarket Components
  • Integral Oversized Trigger Guard and Ambi. Trigger Finger Indexes Accommodate Small, Medium, and Large Hands
  • Shortened and Flared Magwell Cleans up Reloads and Ensures Compatibility with Most if Not All High-Capacity Magazines and Drums
  • Buffer and Rear Takedown Pin Detent and Spring Remain Captured After Removal of Receiver End Plate and Extension Tube
  • Upper Receiver with Forward Assist is M4 Feed Ramp Cut and Features a T-Marked 14 Slot Picatinny Flat-Top
  • Threaded Steel Hardware Included with Ambi. Bolt Catch, Bolt Release, and Magazine Release Preinstalled



Michigan made and designed from the ground up to provide shooters with functionality that benefits their skill set. UTG PRO® billet 7075-T6 receivers feature shooter-focused ergonomics, rigid reliability, common parts compatibility, and a lightweight overall design perfect for the basis of your next build.



What does a standard forged mil-spec AR do well and is there room for true improvement when functionality, ergonomics, and cosmetics come into play?
UTG PRO® AR receivers, influenced by the professional, competitional, and rightful civilian alike, are enhanced AR receivers driven by shooters and made for you.


  • Identical battery of arms on the left- and right-hand side (sans forward assist).
  • Right-side bolt hold-open & release.
  • Left side Rear-justified bolt hold-open & release.
  • All controls are located exactly where expected.
  • All controls manipulate similarly like that of a mil-spec battery of arms.


  • Enhancements not just for a dominant right- or left-handed shooter, but a shooter having to shoot either hand depending upon their environment and situation through mirrored ergonomics and battery of arms.
  • Features one additional Picatinny slot compared to standard along the upper receiver flattop.   
  • Overall melted receiver geometry reduces snag points and hot spots.
  • Flared magwell to facilitate smoother and faster reloads.
  • Firmly planted trigger finger indexing points for short, medium, and large hands.
  • Integral winterized or oversized trigger guard for gloved use.


  • Captured buffer detent and rear takedown pin detent and spring prevents inadvertent loss or damage when removing recent end plate and buffer tube.
  • Shares typical parts commonality with most of what is available in the marketplace.
  • Includes optional upper to lower receiver tensioning screw.
  • Compatible with most, if not all, magazines including drums and quad-stack magazines whether polymer or steel.
  • Installation-friendly threaded steel pins in replace of typical roll pins for easier assembly, parts swapping, and maintenance.


  • Proudly designed and made in the USA.
  • 7075-T6 billet aluminum finished in type III class II matte black hard coat anodize.
  • Material removed where applicable without hindering durability for a reduced overall weight.
  • Overall melted receiver geometry reduces snag points and hot spots.
  • The upper receiver features an optimal 90-degree brass deflector and is cut for M4 feed ramps.
  • Tight tolerance fit of upper and lower receiver, takedown and pivot pins, and barrel extension. 


  • 1/16 Hex L Key
  • 0.02" Flat Head L Key
  • User Manual


More Information
Made in USAYes
Shipping to FFL RequiredYes
922R CompliantNo
Materials7075-T6 Aluminum, Steel
Surface FinishAnodized
Compatible withAR15
Receiver MarkingsCal Multi
Picatinny Slots14
Ejection SideRight
Barrel Nut Thread Specification1 1/4-18
Trigger Pin Size (in)ø.154
Weight Installed (g/oz)440 g / 15.52 oz
Height (in)118 mm / 4.63 in
Length (mm/in)207 mm / 8.16 in
Width (in)120 mm / 4.72 in


Leapers, Inc. warrants that all products conform to published specifications and are free from defects in material and workmanship. Leapers, Inc. will repair or replace, at our discretion, a defective product for the duration of the product’s lifespan. In the event of a product being discontinued, credit for the product’s MSRP may be offered.

⚠️WARNING: This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to www.P65Warnings.ca.gov.