Home / AR Lower Components / SOLGW MIL-SPEC RECEIVER EXTENSION CASTLE NUT “Magpul ASAP QD – Ambidextrous Sling Attachment Point QD” has been added to your cart. View cart SOLGW MIL-SPEC RECEIVER EXTENSION CASTLE NUT$10.44 6 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 $33.25 Add to cart Related products Out of stock FORWARD CONTROLS DESIGN RBF BUFFER RETAINER $7.60 Read more BADGER ORDINANCE Universal Safety Selector $58.00 Add to cart BCM GUNFIGHTER QD End Plate $16.95 Add to cart CMMG Parts Kit, AR15, Lower Pins and Springs $13.99 Add to cart