Review on Othmro Pressure Gauge M8X1Pony Bottle by Eric Pavelko

Bought for Umarex Origin. Couldn't get the thread pitch info from umarex but eventually measured and found it to be M8x1.0. This caliber works great, but you have to be careful when converting to not overfill your rifle. Othmro gauges are the only M8x1 gauges I've seen but only 1 of their 4 offerings have a full thread spec. I ordered 3 of 4 hoping to get the ones I need and they were all M8x1. Now I don't worry about broken sensors anymore with more spare parts.