22 liner – .305, .315, .375
1/8″ steel shaped for breech face
2x m3x10 coutersunk for magazine base (heatset optional)
CMMG/Scarpion magazine spring/ 11/32″ OD 9/32″ ID
3x m3x8 for rear of upper (2 for bolt retettion, 1 for connection to the back of lower with heatset optional)
6x m3x12 (4 lower to upper, 2 barrel into upper with heatset optional)
1x m3x8 countersunk for trigger guard
1x m3x30 magazine button
1 small spring for mag button (I used a pen spring)
6mm with 1mm wire spring cut to length for trigger and .6mm wire for grip safety
1x m2.5×50 screw and about 10 nuts for striker (or other weight as long as it’s above 3g in the end)
1x 1x10x37 striker spring (Harlot spring is 1x10x50, I cut mine to 11 coils)
1x m3x4 and heatset for extractor retention
1x m3 heatset for threaded bolt cap (for bolt hadle screw
1x m3x45 screw for bolt handle
2x 688zz bearings for bolt handle
1.5mm music wire for all pins
4x m3x30 with cap cut off metal epoxied into rear of receiver
Jumbo bobby pin or spring steel like from a windshield wiper, shaped for etractor