SB Tactical UMP and APC Folding Pistol Brace w/ Adjustable Nylon Stabilizing Strap Black SBTSBT-01-SB. SB Tactical Folding Pistol Brace Adjustable Nylon Stabilizing Strap Folding Fits HK UMP and APC Black SBT-01-SB Specifications for SB Tactical SBT...