{"product_id":"vltor-a5-receiver-extension-tube","title":"VLTOR A5 Receiver Extension Tube – AR-15 Carbine Buffer System","description":"\u003cp\u003eThe VLTOR A5 Receiver Extension Tube bridges the gap between carbine and rifle-length buffer systems, delivering smoother cycling and improved recoil impulse on AR-15 platforms. The extended 0.75-inch length over standard carbine tubes allows use of the A5 buffer system, which reduces carrier bounce and provides more consistent bolt lockup—particularly beneficial for suppressed rifles or short-barreled configurations where gas impulse can cause premature unlocking.\u003c\/p\u003e\u003cp\u003eMachined from 7075-T6 aluminum with a mil-spec hard anodized finish, this receiver extension maintains compatibility with standard carbine stocks while accepting the longer A5 buffer and rifle-length action spring. The tube features proper staking holes and castle nut threads. Installation follows standard AR-15 lower receiver procedures. Note: Requires A5 buffer (not included) and rifle-length buffer spring for proper function.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Receiver Extension Tube\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Firearms:\u003c\/strong\u003e AR-15, M4, M16 (mil-spec carbine thread)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e 7075-T6 Aluminum\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFinish:\u003c\/strong\u003e Hard Anodized\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable:\u003c\/strong\u003e N\/A (accepts adjustable carbine stocks)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstallation:\u003c\/strong\u003e Standard castle nut\/end plate assembly, armorer's wrench recommended\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"VLTOR Weapon Systems","offers":[{"title":"Default Title","offer_id":47939096871167,"sku":"VLTRE-A5","price":59.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0729\/0434\/3807\/files\/1302787.jpg?v=1766539366","url":"https:\/\/doublestackstore.com\/products\/vltor-a5-receiver-extension-tube","provider":"Double Stack Store","version":"1.0","type":"link"}