Convert your Gen-2 KRISS Vector SDP into a factory-spec Gen-3 SBR — performance, ergonomics, and modern styling.

Send your Vector to our facility and our certified KRISS gunsmiths will complete a factory Gen-3 conversion using factory parts and assembly. The result is a Vector that looks, handles, and performs like a stock Gen-3 Short Barrel Rifle.

• Save money — upgrade to full Gen-3 features while keeping your serialized Vector.
• Genuine factory parts — installed by certified KRISS gunsmiths for perfect fit, finish, and lasting value.
• Extended coverage — backed by a factory 1-year warranty for total peace of mind.
• Inspected and refreshed — all moving parts checked, with worn springs replaced to restore reliable, factory-spec operation.
• Enhanced ergonomics — modern grip, crisp skeletonized trigger, and ambidextrous controls for improved handling.

• Full inspection & disassembly — complete teardown and inspection of your Gen-2 Vector SDP.
• G3 components (installed):
  • G3 upper & lower housing with updated levers
  • G3 interchangeable AR-15 / M16 pistol grip
  • G3 skeletonized trigger (0.7 mm pre-travel)
  • G3 bolt release & mounting block
  • G3 ambidextrous magazine release
  • G3 rear picatinny stock mount
  • G3 handguard — M-LOK style
  • G3 ambidextrous folding stock
• Factory reassembly, testing & QA — full function checks and final quality inspection prior to return.
• Round-trip shipping included — shipment from you to our factory and return delivery back to you are covered in the service price.
• Factory warranty extension — adds 1 year of factory-backed warranty from the date of conversion.

• 5.5in threaded barrel. Barrel threading:
  
  • 9x19: 1/2 x 28 RH
  • 45ACP: .578x28 RH
  • 10MM: 9/16x24 RH

All promotions, discounts, and coupon codes are explicitly excluded from conversion services. Promotional offers do not apply to Gen-3 conversions and cannot be combined with this service.

• This service applies only to Gen-2 Vector SDP models with 5.5" or 6.5" barrels.
• Not a DIY kit — the firearm must be shipped to KRISS USA for conversion by our certified gunsmiths.
• Lead time: Please allow approx. 2–3 weeksfor conversion and processing from our receipt of the firearm (subject to parts availability).
• Compliance: All transfers and returns will be handled in full compliance with federal and state firearm laws.
• The converted firearm will be returned to the original return address on file or to the FFL of your choice
• Color availability: Conversions are currently offered in Black only; additional color options roll out in Q1 2026.
• Once order is placed, our customer service team will follow up to organize the transfer of your firearm.

Have questions or need shipping instructions? Contact our Customer Service Team at support@kriss-usa.com