Scoophead (STANDALONE)

SCOOPHEAD Single-Shot Breach-Loaded Compact or Bullpup Magazine-Fed Configuration Description The Scoophead is a compact reinterpretation of the Hammerhead platform designed for either single-shot breach loading or a bullpup magazine-fed configuration. The shifted barrel layout maintains a long internal barrel path within a reduced footprint, offering strong performance while remaining simple to assemble, service, and modify. Files are complete and standalone, with attachments included for magazine-fed use and clip-on dart staging. Hardware Kit (Bonnethead / Scoophead / Scalloped) Part McMaster # Qty required 4-40 3/8" FH (steel) 90273A108 24 4-40 1" FH (steel) 90273A115 12 10-32 3/4" FH (steel) 90273A831 6 10-32 1.25" BH (steel) 91440A516 6 10-32 1.75" BH 90279A837 6 10-32 1/8" thick nut 90480A195 12 10-32 Flange nut 90389A113 3 10-32 threaded rod (3ft) 98838A011 2 x 1" + 1 x 1.5" + 1 x 3" + 2 x 5" + 3 x 8" + 2 x 12" Catch Washer 7421K12 1 1.5" OD washer 92141A035 1 4" Spacer (steel) 93265A042 1 3" Spacer (steel) 93265A034 4 1" Spacer 93330A476 3 Small Spring (3/4") (36" *5) 9662K16 6 K26 (11") (5.5" piece) 9637K26 1 K25 (11") (5.5" piece) 9637K25 1 1.375" ID Plunger Tube (3ft) 53945K21 1 x 5" Alum tube 0.509" ID (3ft) 9390N15 1 x 7" + 1 x 14" Press Insert for plastic 92395A112 6 1.375" OD O-RING 9452K87 6 0.5" OD O-RING FAT 9452K18 6 0.5" OD O-RING 9452K21 6   Key Features Single-shot breach-load or compact bullpup magazine-fed setup Long internal barrel path in a compact frame Spacer configuration uses 3"+3" and 4" components to maintain rigidity Straightforward build with fewer large components Includes clip-on dart-holding accessories for staging and transport Spacer Note Dual 3" spacers must be tolerance-matched to create a true 6" smooth spacer. 6" spacer alternatives exist but are higher cost. Expect some spacer surplus if building your own matched