Scoophead: Single-Shot Breach-Loaded Compact
The Scoophead is a focused, single-shot, breach-loaded reinterpretation of the Hammerhead architecture that packs a long-barrel performance profile into a very small package. By shifting the barrel in a c compact frame, the Scoophead delivers surprising range and consistency while staying easy to build and service. Files provided here are standalone and complete. There are also attachments to convert the Scoophead into a standard magazine fed blaster.
Hardware Kit (Bonnethead/Scoophead):
| 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 | 30 |
| 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 | 5 |
| Alum tube 0.509" ID (3ft) | 9390N15 | 21 |
| 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 |
Why Choose Scoophead
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Breach-loaded single-shot simplicity for fast, confident reloading and repeatability
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Compact footprint with a long internal barrel path, giving improved velocity and accuracy without a bulky exterior
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Uses 3"+3" and 4" spacers to shorten the frame while keeping rigidity and balance. Caution that 3" spacers must be matched up properly to create a 6" smooth spacer. 6" spacers are also sold on McMaster but they are quite expensive so this is an affordable workaround. If you would like to do it on your own be prepared to have a surplus of spacers because some won't work because of precision differences.
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Lightweight and serviceable; ideal for demo builds, compact rigs, or a high-performance pocket blaster
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Comes with exclusive dart-holding attachments that clip on for safe transport and quick reload staging