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CYNTHIAWP HARDWARE
Gray box = different from normal Cynthia!
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PurposeQtyDescriptionCut LengthsMcMaster Part# Item $ Item sub-t Alternate Supplier Alt Part # Tools Used
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Plunger spring1Compression Spring Stock, Spring-Tempered Steel 0.969" OD, 0.809" ID K25 SPRINGFits any 11" spring (Caliburn, Perilous, etc)9637K25 $ 0.90 $ 0.90 W.B. Jones
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Plunger tube1Polycarbonate Round Tube, 1-1/2" OD, 1-3/8" ID, Clear172 mm long/6.75 in long8585K207 $ 1.84 $ 1.84
Saw, Deburring Tool
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Mag release pin13/32" Diameter, 3/4" LongSame as Lynx dowel pins98381A441 $ 0.02 $ 0.02
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Ram o-rings3Oil-Resistant Buna-N O-Ring, 1/16 Fractional Width, Dash Number 0129452K21 $ 0.02 $ 0.06 TheORingStore.comB70012
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Barrel nut o-rings2Oil-Resistant Buna-N O-Ring, 1/16 Fractional Width, Dash Number 016
(one for collet, one for SCAR)
9452K6 $ 0.03 $ 0.06
TheORingStore.com
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Plunger and PTcap o-rings3O-Ring Dash 123 (1-3/8" Od x 1-3/16" ID)9452K87 $ 0.03 $ 0.09 TheORingStore.comB70123
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Barrel1Highly Corrosion-Resistant 6063 Aluminum, Architectural, .625" OD, 0.049" Wall Thickness, .527" IDAt least 18 in/45 cm long. Optimal power for K25 calculated at ~55-60 cm at a .509 bore. "Extra Long" 22.5 in .509 from OOD capable of 300 FPS.1658T11 $ 5.00 $ 5.00 Orange AluminumOA6923-8M
Saw, Sandpaper/File, countersink, power drill
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Small screws70Flat Head Screw, 4-40 Thread Size, 3/8" lengthNote: screw number is an estimate. I'm not actually sure how many are necessary, but get plenty. *WILL GET EXACT NUMBER SOON90273A108 $ 0.02 $ 1.40 FastenerSuperstore105707
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Elastic for the mag release and trigger1Elastic Cord Abrasion-Resistant, 3/32" Diameter10 inches total8858T81 $ 0.12 $ 0.12
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Little springs2Compression Spring 0.625" Long, 0.180" OD, 0.152" IDOne for catch, one for optional mag release mod.9657K644 $ 1.00 $ 2.00
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Short takedown pins21004-1045 Carbon Steel Clevis Pin 3/16" Diameter, 13/16" Usable Length98306A104 $ 0.32 $ 0.64
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Threaded Rod: 10.7" Trigger rod2Low-Strength Steel Threaded Rod, Zinc Plated, 10-32 Thread, Fully Threaded1x 10.7 in. The second rod that typically goes in the FrontBlock is not needed, as the CynthiAWP has no FrontBlock.98842A011 $ 1.16 $ 2.32 GraingerBand Saw, Disc Sander
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C4 Aluminum Bars2C4 Spec Aluminum bars (from the Caliburn 4)C4 spec8975K577 $ 4.00 $ 8.00 Saw, Drill
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Normal bolts3Rounded Head Screw, 10-32 Thread Size, 1-3/4" Long90276A837 $ 0.03 $ 0.09 FastenerSuperstore146263
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Long bolt1Steel Decorative Round Head Slotted Screws 10-32 Thread Size, 2-1/2" Long90276A840 $ 0.13 $ 0.13
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Deez Nuts6Hex Nut, 10-32 Thread Size 90480A195 $ 0.03 $ 0.18 FastenerSuperstore153191
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TC ramrod1Talon Claw ramrodTC length $ 8.00 $ 8.00
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LubeSilicone Lubricant
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OPTIONAL (clicky bolt handle)1Ball detent 6x7mm $ 0.50 $ 0.50
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NOT INCLUDED IN KITNOT INCLUDED IN KIT: 2-part epoxy, CA glue/superglue
NOT INCLUDED IN KIT
NOTE: MAKE SURE YOU USE 2-PART EPOXY FOR GLUING THE PLUNGER CAP TO THE PT!
CA glue definitely will not hold up, and I'm not even sure E6000 will hold long-term. This is a known
point of failure even on the normal Cynthia, and all the extra spring definitely won't do any favors.
CA glue/superglue is probably fine wherever else you need to glue stuff.
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103 Sub-Total: $ 31.35
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