Due to High Demand Lead Times are Four to Six Weeks
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Bullpup Lower Receiver

Bullpup Lower Receiver
Bullpup Lower Receiver - Image 2
Bullpup Lower Receiver - Image 3
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  • Lower Receiver, choose from 3 different anodized colors OR NEW – In-The-Raw aluminum for those who want to Cerakote
  • Receiver manufactured from 6061 Aluminum
  • Custom fire control trigger group designed by Elftmann Tactical included – competition trigger & adjustable.
  • Trigger/Ambi Safety
  • Front pic rail adapter and screws included
  • What’s not included:
    • pistol grip
    • any brace, stock or other components not listed above

Price range: $985.50 through $996.60

The unique, custom lower receiver can be adapted to the MAT9, 8″ or 16″ barreled Roller Delayed configuration.

The BULLPUP LOWER requires two key elements to function properly: 
1. MAT9 UPPER RECEIVER, ROLLER DELAYED ONLY with 8″ minimum barrel length.
2. A CLEARANCE CUT ON THE UPPER: IF YOUR UPPER DOESN’T ALREADY HAVE ONE. See the instructions to understand where the clearance cut is. All MAT9 uppers manufactured after 5/1/2026 will include the Clearance Cut. CLICK HERE FOR INSTRUCTIONS

Not recommended for the MATK, 5.5in barreled version, as the barrel would be rearward of your forward grip as you hold the firearm.
CLICK HERE FOR INSTRUCTIONS

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