Your Final Answer!

This is the most advanced yet simple AR lower receiver ever made!

SanTan 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!

SanTan machines 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. The STT-15 is your final answer in the AR \ M4 firearms platform!

Lower Features:

• Huge 1.38” Integrally Machined Magazine Well Flare
• Ambidextrous Quick Attach \Detach Sling Swivel Points With Anti-Rotation Stops Every 45 Degrees.
• Ambidextrous Bolt Release.
• Ambidextrous Magazine Release.
• 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 Ounces /268 Grams With Ambidextrous Controls 8.4 Ounces / 238 Grams Without Ambidextrous Controls.
• Dimensions: Length: 7.69” Width: 1.490” Height: 4.015”
• AMaterial: Billet 7075-T651 Aerospace Grade Aluminum, Cast A-2 Tool Steel
• Finish: Aluminum – Matte Black MIL-A-8625 Type III Hard Anodize, Steel – Black Oxide
• Butt-Stock: Works With Any Mil-Spec or Commercial Buffer Tube and Stock.
• Magazine Compatibility: (Lock In, Drop Free Additional Magazines Will Be Added As Tested) 100 Round Beta Mag, 100 Round Surefire,60 Round Surefire, 30 Round Magpul P-MAG Any Generation, 20 Round Magpul P-MAG Any Generation, 10 Round Magpul P-MAG Any Generation, 30 Round Mil- Spec Mag, 20 Round Mil-Spec Mag
• Component Compatibility: Works With All Mil-Spec AR-15\M16 Components*.

Upper Features:

• San Tan Tactical Truss pockets for increased structural rigidity.
• Cut from a single billet 7075 -T651 aerospace grade aluminum.
• Shell deflector
• Fully Assembled with forward assist, and ejection port cover.
• Machined in T markings for easy optic relocation.
• Machined with M4 feed ramps.
• Machined to mil-spec standards.
• Interfaces with all AR15/M16/M4 weapons systems and accessories.
• Mil Spec Type III class II hard coat anodized Black
• No roll pin design. (Forward assist attaches via threaded dowel pin)
• Lightweight- Weighs in at only 8.2 Ounces. Who said billet had to be heavy!
• Compatible with a multitude of rail manufacturers anti rotation tabs & Pins including Noveske NSR® rail.
• Compatible with all known battery assist lever on the market today.
• Backed by STT’s unmatched lifetime warranty.
• Made in the USA!