ARMASPEC 45/90 DEGREE SHORT/FULL THROW AMBIDEXTROUS SAFETY SELECTOR - Ships From Sports South

ARMASPEC
SKU:
188275
|
UPC:
810048490882
$44.99

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ARMASPEC ARM113-BLK 45/90 Degree Short Full Throw Ambidextrous Safety Selector, black, aluminum levers steel core, AR-15 AR-10 compatible, made in USA ARMASPEC — Ambidextrous Safety Selector

ARMASPEC 45/90 DEGREE SHORT/FULL THROW AMBIDEXTROUS SAFETY SELECTOR — ARM113-BLK

Made in USA Ambidextrous 45° / 90° Throw AR-15 & AR-10 Lifetime Warranty

One selector. Two throw angles. ARMASPEC’s ST45/90 ambidextrous safety selector lets you run either a 45° short throw or a traditional 90° full throw — your choice — on both your AR-15 and AR-10 builds. The aluminum levers keep weight down while the steel core provides the structural integrity and crisp, positive lockup you need in a fire control component. Made in the USA. Backed by a lifetime warranty.

Short Throw or Full Throw — Your Call

The defining feature of the ST45/90 is its dual-mode flexibility. A 45° short throw reduces the rotational distance between SAFE and FIRE, allowing faster transitions without a full wrist rotation — a meaningful edge for competition shooters and anyone running their rifle dynamically. Prefer the traditional feel of a 90° throw? The selector accommodates that too, with the same smooth action and positive detent either way.

Ambidextrous paddle placement means right- and left-handed shooters get the same ergonomic reach and manipulation angle. The levers are machined aluminum to minimize weight, and the core is steel where it matters most — at the rotational interface where wear and stress concentrate. The result is a selector that feels noticeably smoother than mil-spec while locking up with a crisp, defined detent in both positions.

Key Features

  • User-configurable 45° short throw or 90° full throw
  • Ambidextrous — paddles on both sides for right- or left-handed use
  • Aluminum levers — lightweight without sacrificing durability
  • Steel core — strength at the rotational interface
  • Smooth action with crisp, positive detent lockup
  • Fits AR-15 (5.56/.223) and AR-10 (7.62/.308) platforms
  • Made in the USA
  • Lifetime warranty
  • Patent pending design

Quick Specs

  • BrandARMASPEC
  • MPNARM113-BLK
  • UPC810048490882
  • ModelST45/90
  • Throw45° or 90° (user-configurable)
  • Lever MaterialAluminum
  • Core MaterialSteel
  • ColorBlack
  • AmbidextrousYes
  • PlatformAR-15 / AR-10
  • Caliber5.56/.223 and 7.62/.308
  • Weight0.03 lb
  • Dimensions3.9 × 3.0 × 0.6 in
  • OriginMade in USA
  • WarrantyLifetime
  • List Price$44.99
Compatibility

✔ AR-15 mil-spec lower receivers

✔ AR-10 / .308 lower receivers

✔ 5.56 / .223 Wylde builds

✔ 7.62/.308 builds

✔ Right- and left-handed shooters

Frequently Asked Questions

What is the difference between 45° and 90° throw?

Throw refers to the rotational arc the selector lever travels between SAFE and FIRE. A traditional mil-spec safety selector uses a 90° throw — a full quarter turn. A 45° short throw halves that arc, meaning less wrist rotation and a faster transition between conditions. The ST45/90 supports both, so you can choose based on your training background, shooting style, or competition ruleset.

How do I switch between 45° and 90° mode?

The ST45/90 is designed to be user-configurable between throw angles. Refer to the included instructions from ARMASPEC for the specific adjustment procedure, as the selector must be removed from the lower to change the throw setting. No special tools are required beyond a standard AR-15 lower parts kit installation setup.

Will this fit my AR-10 or .308 lower?

Yes. The ST45/90 is compatible with both AR-15 (5.56/.223) and AR-10 (7.62/.308) platforms. This cross-platform compatibility makes it a convenient choice if you run both calibers and want consistent controls across your rifles.

Are the aluminum levers durable enough for hard use?

Yes. The levers are machined aluminum, which provides adequate strength for normal operational use while keeping the overall weight of the selector extremely low. The steel core handles the load-bearing rotational function where wear and stress are greatest. ARMASPEC backs this design with a lifetime warranty, which speaks to their confidence in long-term durability.

Does this require any modification to the lower receiver?

No. The ST45/90 is a drop-in replacement for the standard mil-spec safety selector. It installs into the selector detent hole and uses the existing selector detent and spring in your lower parts kit. No machining or modification to the receiver is required.

About ARMASPEC

ARMASPEC designs and manufactures innovative AR-platform components and accessories with an emphasis on ergonomics, reliability, and weight savings. Their product line spans buffer systems, fire controls, charging handles, and furniture — all engineered and manufactured in the USA and backed by a lifetime warranty.

model:
SFT
size:
Short
hand:
Ambidextrous
Fulfillment Source:
Trusted Distribution Partner