UDP-9 Complete Pistol Lower

(10 customer reviews)

The UDP-9 pistol lower is a complete, ready to run 9mm AR-15 lower that runs on GLOCK® magazines


In stock

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UDP-9 Complete Pistol Lower Specifications:

  • Last round bolt hold open on an empty magazine (LRBHO)
  • Accepts 9mm, .40 S&W and .357 SIG GLOCK® magazines
  • Flared magwell for faster reloads
  • Integrated, oversized trigger guard
  • 7075-T6 billet aluminum lower with a matte black hard-coat anodized finish
  • Works with any mil-spec upper receiver
  • Threaded bolt catch screw
  • For use with a 9mm bolt carrier assembly and a standard AR-15 hammer
  • 5.4oz 9mm buffer kit
  • B5 Systems pistol grip
  • Patent pending
  • Accepts all Glock® aftermarket magazines. We recommend using factory Glock® magazines. Please see this page for magazine compatibility
Weight 3 lbs
Dimensions 15 × 8 × 2 in

Angstadt Arms


Angstadt Arms

10 reviews for UDP-9 Complete Pistol Lower

  1. Nick (verified owner)

    Extremely well built, this is a piece of art! Lighter than expected. This will be an excellent piece of a tool to add to the tool shed

  2. ERC (verified owner)

    Excellent product, stellar construction!

  3. R (verified owner)

    Paired with Angstadt 4.5″ 9mm Complete Upper Assembly – Suppressor Ready. First day at range about 200 rounds spent, Rem, Blazer, Fed, Win 115-124 gr FMJ. Then defense loads, Win 147 gr JHP & Hornady Critical Duty FlexLock 135gr +P. Flawless functioning. I can see that this will probably be my go to PDW!

  4. Larry W. (verified owner)


  5. Josh (verified owner)

    Solid build. Would highly recommend for PCC build

  6. Corey V. (verified owner)

    Absolutely love the quality. The LRBHO feature is a very nice touch. Very lightweight as well!

  7. Rick C. (verified owner)

    I would have given it 5 stars but it came in an unmarked box with a packing slip. For the price I paid I expected at lease a decent box with protective foam. Not that the other plain box was not packed well. Just expected something a little nicer. Lower looks good. Trigger has a bit of creap/ mushy feel but breaks clean with a short reset. Very happy with the product. Runs without issue with my upper.

  8. John (verified owner)

    Extremely well built and works flawlessly with the Angstadt 6” upper I had previously purchased and used with a Colt lower. I like that I can now use Glock magazines.

  9. Trayb3 (verified owner)

    Great product work’s excellent with my 16’ complete barrel.

  10. Mark P (verified owner)

    Awesome lower. Now my pcc is complete with both lower and upper from Angstadt. Excellent products

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UDP-9 Complete Pistol Lower
UDP-9 Complete Pistol Lower

In stock

Purchase & earn 695 points!