Home / Accessory-Parts / B&T USW-G20 CONVERSION KIT G20/21 View cart “Warne SKYLINE PM DELTA CARD HOLDER” has been added to your cart. Sale! B&T USW-G20 CONVERSION KIT G20/21$57500 $45707 Out of stock SKU: BT-430220 Category: Accessory-Parts Product ID: 26294 Description Description Compatible with Glock 20/21Aimpoint ACRO InterfacePicatinny Rail with Screw Related products Wilson Combat MAGWELL 1911 BLUED $2995 Christensen Arms THREAD PROTECTOR 5/8-24 BRNZ $3999 Wilson Combat GRIP MOD WCP365 XL BLK $6495 Wilson Combat GAS TUBE PISTOL LENGTH 6.6″ $1350