ASF-50Q is a short throw (rotate to 50 degree for FIRE/SEMI) semi auto selector with Q (offset) levers.
ASF (Ambidextrous Selector, Forward Controls) and SOLGW’s The Quick is a joint project between FCD and SOLGW. Work began in Dec. 2018 to create a safety that’s an embodiment of their combined experience in AR15/M16 selector design and knowledge.
ASF was designed from the ground up to be a defense/duty/combat safety selector, its mission is quite aptly reflected by the way its levers are attached the center, via a stainless steel roll pin. The lever to center interface is immensely strong, the high shear strength (800 lbs) 420 stainless steel spring steel roll pin simply holds the two in place, and doesn't handle any load.
The end cap is for those that don’t wish to have a lever on the weak side of the receiver. With the end cap, ASF becomes a convertible selector (between ambidextrous and non-ambidextrous.)
ASF is shipped with a selector spring, a KNS nitrided selector detent, two levers (or one lever, with an end cap), 4 roll pins (two are needed for installation, with 2 spares), with a single lever partially assembled.
ASF centers are billet machined in 8620, heat treated and black nitrided. Levers are billet machined in 8620 and black nitrided.
ASF is a collaboration with Sons of Liberty Gunworks. Made in the USA
For ASF installation instructions, please visit this page: ASF Installation
Safety 
Good, Not Great