Home / Accessory-Parts / B&T USW-G20 CONVERSION KIT G20/21 View cart “Christensen Arms THREAD PROTECTOR 5/8-24 BRNZ” 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 ProMag PROMAG AMBI DUAL SLING PLATE $1599 Wilson Combat GRIP MOD WCP365 XL BLK $6495 Wilson Combat GAS BLOCK AR15 LO-PRO .875″ $3495 Trijicon SRO REPLACEMENT BATTERY CAP $3200