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F5 MFG Modular Stock System (MSS) for B&T APC9 on a SMG

AI illustration of a similar part on the gun.

SMG · Brace or stock

F5 MFG Modular Stock System (MSS) for B&T APC9

$300

Build with this part

Opens the builder with this part fitted. Other parts change only if they have to.

Specs

Typestock
Nfa noteStock on a pistol with a barrel under 16 in makes it an SBR; register it under the NFA before fitting.
FitsAPC9 PRO

Pros and cons

Pros
  • B&T adapter built in
  • Adjustable comb and length of pull
  • Rigid, low-wobble lock-up
Cons
  • Factory hydraulic buffer not included

Other brace or stock options