User contributions for Johndoe
6 February 2026
- 11:1511:15, 6 February 2026 diff hist +615 Blowback Bolt Weight →Advise current Tag: Visual edit
- 11:0911:09, 6 February 2026 diff hist 0 Blowback Bolt Weight →Bolt Weights: Fix typo Tag: Visual edit
- 03:1803:18, 6 February 2026 diff hist +35 Blowback Bolt Weight →Bolt Weights Tag: Visual edit
- 03:1103:11, 6 February 2026 diff hist +596 Blowback Bolt Weight No edit summary Tag: Visual edit
5 February 2026
- 12:3512:35, 5 February 2026 diff hist +334 Blowback Bolt Weight No edit summary Tag: Visual edit
- 12:3312:33, 5 February 2026 diff hist +373 N Blowback Bolt Weight Created page with "== Introduction == == Advise == The best advise for designing a safe and secure bolt is to look what professional companies have designed. For 9x19, a common bolt blowback mass is around 650g. This includes the bolt handle and attachments to the bolt that are part of the moving mass, i.e. the firing pin and the extractor. For .22LR, a common blowback mass is 200-220g." Tag: Visual edit