{"product_id":"silencerco-ac863-glock-21-gen3-45-acp-5-30-threaded-barrel-black-nitride","title":"SilencerCo AC863 Glock 21 Gen3 45 ACP 5.30\" Threaded Barrel - Black Nitride","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eSilencerCo AC863\u003c\/span\u003e\u003c\/strong\u003e is a precision drop-in \u003cstrong\u003ethreaded barrel\u003c\/strong\u003e for the \u003cstrong\u003eGlock 21 Gen3\u003c\/strong\u003e, chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e45 ACP\u003c\/span\u003e\u003c\/strong\u003e. Machined from \u003cstrong\u003e416R stainless steel\u003c\/strong\u003e and finished in a low-reflectance \u003cstrong\u003eblack nitride\u003c\/strong\u003e coating, this replacement barrel is built to deliver match-grade accuracy and long service life while giving you a ready-made threaded muzzle for suppressor use.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eMeasuring \u003cstrong\u003e5.30\"\u003c\/strong\u003e overall, the AC863 installs as a direct replacement for the factory Glock 21 Gen3 barrel and requires no fitting. The muzzle is cut with \u003cstrong\u003e.578x28\u003c\/strong\u003e right-hand threading, making it compatible with a wide range of 45 ACP pistol suppressors and thread-on muzzle accessories. No sights are included on the barrel itself, allowing it to be used with the host pistol's existing sight setup.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eWhether you are building a dedicated suppressed host or simply upgrading the factory barrel for tighter groups and longer service life, the AC863 brings SilencerCo's suppressor-ready engineering to your Glock 21 Gen3 pistol.\u003c\/span\u003e\u003c\/p\u003e","brand":"SilencerCo","offers":[{"title":"Default Title","offer_id":55010953527618,"sku":"160257","price":131.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_2c58f1b5-baa9-41e4-826d-a6084f648acb.png?v=1784631788","url":"https:\/\/centerfiresystems.com\/products\/silencerco-ac863-glock-21-gen3-45-acp-5-30-threaded-barrel-black-nitride","provider":"Centerfire Systems","version":"1.0","type":"link"}