Top to bottom) 23mm NR/NS-23, 30mm ADEN, 20mm Oerlikon, 50cal M2/M3, 7.62mm Browning. Just thought I'd share a bit of my collection to give food for thought on actual sizings of rounds,
File:Lazar 3 top 30 mm Žandarmerija MUPa Srbije - Odbrana slobode 2019 Niš 1.jpg - Wikimedia Commons
6061-T6 aluminum model, 30 mm inner diameter cylinder. Top: Material... | Download Scientific Diagram
BIMINI TOP SLIDE 2 PART A4 FOR TUBE 30 MM PART NO 8478430 – Gib Yachts Chandlery
BINDER Top Access Port (30 mm) Diameter: 30 mm; For Use With: KMF 720, | Fisher Scientific
Top Sedgwick 175 x 65 x 30 mm Bore Limiter/ Rebate Combi Head
Stiže 'pravo' oružje za hrvatske Patrije: Izraelski top 30 mm i rakete Spike! - Večernji.hr
Circular sawblade GoldLine 190 x 2,8 x 30 mm. T=24 ATB - BS tools
Shells Strips Russian 30mm Gun 2a42 Stock Photo (Edit Now) 1035479698
Jason Industrial 640-8M-30 HTB Profile Timing Belt, 8 mm Pitch x 30 mm Top Width x 640 mm Outside Circumference, 8 mm Tooth, 80 Teeth: Amazon.com: Industrial & Scientific
5mt Top Quality 1.25" (30 mm) White Flat Elastic: Amazon.co.uk: DIY & Tools
5mt Top Quality 1.25" (30 mm) White Flat Elastic: Amazon.co.uk: DIY & Tools
SherryBerg 30mm throttle body for yamaha aerox 155 150 top quality replace carburetor carb 155cc 30 mm|Throttle Body| - AliExpress
Amazon.com : Burris 420189 XTR Picatinny Ring Top (1-Inch, Black) : Sporting Optic Rings : Sports & Outdoors
Aselsan Muhafız (Smash 30mm) – Millisavunma.com
Ride 603 Cigar Storage Tube (30 mm Shell casing) Gold or Silver Top Ch
11.4018.012.005 RockShox Top Cap Assembly Air 30 mm 30 Gold A1
30 mm MUHAFIZ Uzaktan Komutalı Stabilize Top Sistemi | ASELSAN
Aimpoint Base and Top Ring 30 mm - Optics-trade
Yusuf Akbaba di Twitter: "IDEX2019'da sergilenen Cockerill yeni nesil taret. 25 - 30 mm top ve 2'li atgm atıcısına sahip. Hafif, orta ve ağır sınıf bir çok araca entegre edilebilir.… https://t.co/mE7WxWQUsc"
Stainless steel 30mm ring - Bimini Top Nàutica
File:Protiletalski top 20 mm Flak 30.JPG - Wikimedia Commons
BRAND® stopper red rubber, H 30 mm, top diam. 32 mm | Sigma-Aldrich
