Dynamic Precision Ultra Lightweight Aluminum Blowback Housing for TM Hi-Capa Series Airsoft GBB Pistols (Color: Silver)

"works well with stock tm nozzle, the delrin piston thing needed to be filed a bit to fit a KJW red nozzle, but works well after that. it's light, strong, and fits perfectly into stock and airsoft masterpiece slides. no real complaints

"Really good housing, extremely light compared to the stock housing. I use this on a TM Hicapa 5.1, with a guarder nozzle and its worked flawlessly for the past year. Drop in fit for airsoft masterpiece slides. After having this for around a year now the threads stripped, and i cannot use it anymore unfortunately.
Otherwise and pretty nice upgrade from the stock housing, and definitely better than a chunk of other housings on the market.

"Drop in fit for an Airsoft Masterpiece Shield slide, but heavy modification is required for a WE or AW slide. It's almost half as heavy as a stock blowback unit and it does its job flawlessly. Be careful though because WE/AW nozzles are incompatible due to their thickness. I bought a Guarder nozzle amd it works fine!

"Fits well on the KJW 1911 Tactical Hi-Capa with the Tanio Koba grip. All you need is the stock nozzle and you are ready to go. The upper slides smoothly.

"YOU DON'T HAVE TO BUY UAC PARTS TO MAKE THIS WORK!!!!
I personally use this with a stock tm nozzle. I've also tried with WE and Guarder and they work perfectly fine.

"This is an upgrade part, not stock one. To use this, you have to buy the UAC Aluminum Loading Nozzle (I bought also the UAC Alum. Nozzle Valve and the UAC Alum. Valve Blocker) to fit perfectly; use the original TM nozzle valve spring.
It seems to be durable compared to original parts.

Pros: Lightweight, better construction, fits perfectly on a Airsoft Masterpiece Aluminium Slide (for my TM Hi-Capa),

Cons: You have to buy all other parts from UAC to use this Blowback Housing.

"So I bought this unit for a kjw 5.1. I have been disappointed with this not matter how much tinkering I do. I bought a dynamic percision Nozzle to match with this and it leaks. So that was super neat. I used 48780 with this bbu. It doesn't leak as bad as the kjw oem part. Still not impressed.

I'm using green gas. Maybe this was meant for use with hpa hicapas.

"Well if nothing else this part is a bit of a mixed big. The description is fairly lack luster in regards to giving potential buyers the information they may want to know about before buying this blowback housing. The description for this piece says that it will fit inside of a Tokyo Marui Hi Capa slide but fails to provide helpful details when mentioning other "similar pistol models." I can see a lot of people buying this blowback housing and then trying to fit in inside their slide only to find that it doesn't fit properly. If this is the case for you will need to grind the outer surface down with a dremel to get it to fit right (I say using dremel because using anything other than a tool will take hours or grinding make it fit properly). Also you may need to replace the loading nozzle as well because the stock nozzle cannot fit properly around the cylinder in the blowback housing due to its size.

As far as the improvements to performance goes I have yet to determine how good of an upgrade it is. I have only recently begun to use this part after grinding it down enough to fit inside my gun. It certainly works like the stock blow back housing but I can't say that it works as drastic improvement.

I'd say that this blowback housing is average at best. Possibly even lover if you lack the tools to effectively fit needed to resize this part if it can't fit in your slide without modifications to it.

"Had to shave down a bit off the bottom so it wouldn't hold up against the hammer.

Doesn't seal well with the dynamic percision Nozzle. Which is less than amusing. Over all its built well and it fit in the slide of my kjw but it doesn't perform to the name sake.