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Springfield's $295 Echelon COG: a niche deal, not a cheaper gun

October 26, 2026

Springfield Armory now sells the Echelon's Central Operating Group on its own for $295, letting buyers start a custom build with the serialized chassis instead of parting out a complete pistol. GarandThumb breaks down whether that's actually the cheaper path to a tailored Echelon.

Key points

  • What you get: The $295 COG is the stainless steel chassis holding the trigger and operating parts, legally the firearm itself, and it's transferable between compatible grip modules and slides via FFL.
  • Three factory builds: GarandThumb notes the COG can form the compact 4.0C, the hybrid 4.0FC (compact slide on a full-size grip), or the full-size 4.5F, with standard, threaded or compensated uppers adding more options.
  • The real cost: Stacking a $64.99 grip module and a slide kit up to $439.99 onto the COG can push a full build near $800 before tax, transfer fees or a magazine, often more than a complete factory Echelon.
  • Not interchangeable with other systems: Echelon magazines and the COG itself don't cross over with SIG's P320 FCU or other modular pistols, despite the similar concept.
  • Best use case: GarandThumb argues the chassis makes the most sense for buyers wanting a nonstandard configuration, not shoppers who just want an ordinary Echelon.

Quick take

This is a smart option for a narrow crowd. If you already have spare parts or want something Springfield doesn't sell assembled, the standalone COG avoids buying a whole donor pistol just to swap its guts. If you want a stock 4.0C or 4.5F, price the complete gun first.

Read the full story: garandthumb.com