This new Franklin Armory BFSIII Binary pistol with brace and BCA 7.5" Stainless steel heavy barrel upper combine to make a 5.56 NATO(223) binary pistol with 3 position safety that fires on trigger pull and on trigger release when in binary position and standard semi auto when in semi-auto position. Pistol arm brace is not adjustable. Insured shipping is $45.00 to the continental U.S. where allowed and no card fees added at Deals on Guns.  Franklin Armory website; FRANKLIN ARMORY® Binary® AR-Essential Equipped Pistol Built Lower Buying a complete firearm or lower from Franklin Armory® is easy, safe, and legal. Federal law requires all firearms be shipped to a licensed dealer.  Orders cannot be processed until we receive an FFL for your order, the posted lead time will begin once your dealer's FFL is received.  Not for civilian sales in: CA, CT, DC, DE, FL, HI, IA, IL, MA, MD, MN, NJ, NY, RI, and WA LOWER RECEIVER PISTOL Forged MATERIAL 7075-T6 Aluminum Features Specialized Tension Screw GRIP A2 Pistol Grip TRIGGER Binary AR-Essential BRACE SBM4 Brace MAGAZINE 30 Round Steel Magazine COLOR Black SELECTOR Single-sided