OEM Wilson Combat SBR Tactical upper from their rare and discontinued TRIM series, with BCG (all info in picture) {made for full-auto LE/military}

Will straight trade for an H&K clone from MKE CAI PTR Zenith  (MP5 MP5k-PDW MP5SD HK53 HK33 HK93 HK91 HK51 etc.)

or cash sale $2,000

(non-NFA, as is, considered a "part")

ap5 ap5p ap5-p ap5sd ap53 ap-53 ap51 ap-51 ptr9k ptr-9k ptr9ct ptr-9ct ptr9-k ptr9-ct g3 ptr91 ptr-91 ptr100 ptr-100 ptr101 ptr-101