Home / Accessory-Parts / B&T USW-G20 CONVERSION KIT G20/21 You cannot add "Wilson Combat MAGWELL 1911 BLUED" to the cart because the product is out of stock. 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 GAS BLOCK AR15 LO-PRO .750″ $3495 Sale! POF USA DICTATOR GAS BLOCK MIDLENGTH $16300 $16234 Wilson Combat LOWER RECEIVER PARTS KIT AR-15 $4995 Wilson Combat GAS TUBE AR-15 SS 11.75″ $1795