McAfee SECURE sites help keep you safe from identity theft, credit card fraud, spyware, spam, viruses and online scams
Taking the AR15 parts and accessories to new heightsTM
San Tan Tactical

San Tan Tactical STT-15 Ambi Lower Receiver w/ Logo 45 Safety

San Tan Tactical STT-15 Ambi Lower Receiver w/ Logo 45 Safety

Availability: In stock




The Ultimate Ambidextrous AR-15 M4 Platform

They designed this lower receiver out of necessity and a desire to have a true ambidextrous AR-15 M4 platform. Allowing it to accommodate any and all shooters without the need to add countless costly add-ons. Whether you are a right or left handed shooter, or forced to shoot with your off hand, the STT-15 has you covered! STT-15 is designed specifically for situations in which there's no room for error and you must use your rifle to take that shot!

They machine the STT-15 directly from a billet of 7075-T651 aerospace grade American aluminum on their brand new Haas CNC machinery. This allows them to hold ultra-tight tolerances and make sure that the final product is exactly as designed. The finished receiver is then finished in Mil-Spec, MIL-A-8625 Type III hard anodizing.

Even though this is a tool to some it is a show stopper to others! The final finish is every bit as important as the features and materials the lower consist of! The STT-15 is everything you have come to expect from a San Tan Tactical, and then some.


  • Ambidextrous Bolt Release.
  • Ambidextrous Magazine Release.
  • Ambidextrous Quick Attach Detach Sling Swivel Points.
    (With Anti-Rotation Stops Every 45 Degrees)
  • Huge 1.38" Integrally Machined Magazine Well Flare
  • Bullet Pictogram Safety Selector Markings.
  • Set Screw Trigger Creep Adjustment.
  • Set Screw Upper Take Down Tension Adjustment.
  • Shooter Ready Finger Rest.
  • Oversized Winter Trigger Guard.
  • Dowel Screw Assembly.
  • Ultra Grip Texture On All Controls.
  • Weight: 9.4 oz
  • Material: Billet 7075-T651 Aerospace Grade Aluminum, Steel - Black Oxide

FFL Required Before Shipping. Please have your dealer email their license to or they can also fax it in. Please give us a few days to process the information.

Additional Info

Additional Info

Manufacturer San Tan Tactical
Finish No
Barrel Length No
Caliber No
Configuration No
Option No
Gas Length No
Height No
Rail Length No
Mount No
Profile No
Reticle No
Co Witness No
Size No


Customer Reviews (2)

Best lower on the marketReview by Dakota
I thought it was crazy to spend $250+ on a lower, but when I saw this I had to have it, and I'm not even a lefty. I had a PSA lower build kit and the safety detent was too big for the hole on the receiver, I called Dennis and he sent me the KN precision detent for free. I go through mag changes much faster because I actually use the bolt release on the right side. Makes any rifle look much better, mainly because of the flat sides within the trigger guard. The only problem now is that I'll be spending $300 on the lower every time I build a new rifle, I could never go back to basic receivers. Fast shipping from Rainier arms, I couldn't be happier. (Posted on 7/29/2016)
Great lower for a leftyReview by BroncoAZ
I have purchased and built three of these San Tan Tactical lower receivers now. They are great quality and work well. I did get one lower with the issue the other reviewer described, but one call to the company and it was remedied immediately, great customer service from Dennis. I appreciate companies making products for those of us who are left handed. (Posted on 6/25/2015)

Write Your Own Review

Only registered users can write reviews. Please, log in or register

You may also be interested in the following product(s)

Gas Tube Black

Gas Tube Black

13 Review(s)
Law Tactical Gen 3-M AR Folding Stock Adapter

Law Tactical Gen 3-M AR Folding Stock Adapter

Regular Price: $259.99

Special Price $246.99

6 Review(s)