Home / AR Lower Components / SOLGW MIL-SPEC RECEIVER EXTENSION CASTLE NUT SOLGW MIL-SPEC RECEIVER EXTENSION CASTLE NUT$10.99 9 in stock [] SOLGW MIL-SPEC RECEIVER EXTENSION CASTLE NUT quantity Add to cart UPC: 785939517545 SKU: CASTLENUTMS Category: AR Lower Components Tag: solgw Product ID: 16084 Description Description SOLGW MIL SPEC RECEIVER EXTENSION CASTLE NUT You may also like… SOLGW AMBI SAFETY SELECTOR KIT $27.99 Add to cart Related products Magpul MOE Trigger Guard, Polymer – AR15/M4 – Black $8.50 Add to cart Magpul ASAP QD – Ambidextrous Sling Attachment Point QD $28.45 Add to cart Out of stock BCM GUNFIGHTER QD End Plate $16.95 Read more Out of stock Sons of Liberty Gun Works Enhanced Blaster Guts Lower Parts Kit $112.80 Read more