USGI M23 Blank Adapter (BFA), Yellow, NSN 1005-01-361-8208, for M4 / M4A1

GO DENEX 5.56X45MM M200 BLANKS 900 M2A1 CAN

Dead Air Armament Thread Adapter 1/2x28 RH Fits GSG 1911, Black - DA421

Blue Line Stock Adapter Set - Premium Adapter Set for Versatile Stock Customization and Enhanced Shooting Stability - 415.90.0006

AMERICAN TACTICAL IMPORTS Glock 9mm Magazine Adapter Black 3 Pack

Sig Sauer Locking Insert Blue Two Tone for SP2340 Handgun

ARMASPEC ST45 45 DEGREE SHORT - ARM112BLUE

ARMASPEC SFT45/90 DEGREE SHORT - ARM113BLUE