SPECIFICATION CPD RIFLE ACCESSORIES 6100065204 OVERVIEW. The Department of General Services (DGS) on behalf of Capitol Police Department (CPD) is issuing this Invitation for Bids (IFB) to procure the required HUXWRX Flow 556k suppressors and Flash Hider-QD 556 accessories. EQUIPMENT. Equipment must be to exact specifications. Equipment to be purchased includes, but is not limited to: HUXWRX Flow 556k suppressors – Qty 25 each • Compatible with AR-15’s • 5.5 inches • Technology that redirects high pressure gases to avoid blow back pressure FLASH HIDER-QD 556 1/2X28 - Qty 25 each • Muzzle device length is 2.3 inches • The Flash Hider-QD 556 is compatible with the FLOW series 556k suppressors ESTIMATED QUANTITIES. DGS, CPD reserves the right to add or remove equipment types and quantities. INVOICES. Invoices will be itemized as purchase order setup and reflect customer contract number.