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sloppyone Tuesday, March 23rd, 2010
Period of
Product Use:
2 years19 of 19 people found this review helpful.

1 year
Products Used:
BT-4 Combat -> Useless barrel
BT-4 Delta -> Useless barrel (i think its the same as the Combat?)
BT-4 Assault
Marker Setup: replaced stock with external velocity adjuster
switch between stock barrel and a 14" .690 tiller barrel.
Chrono'd at 275-290fps
removed sight rail and replaced with BT-4 combat sights (when not using stock barrel)
Barrels - there are many options out there.
A5 to spyder adapter (if wishing to use a spyder barrel)
Expansion chamber to improve consistancy (I can't afford one)
Polished internals.
Strengths: Rugged marker but keep it clean
Simple mechanics
Easy to disassemble
Sling provided (handy)
Weaknesses: Low BPS
Chopping & jams @ high ROF
Screws in the grip
Open bolt
Bipod = useless
Review: Background:
Bought this 2 years ago when I wanted to get into paintball. I chose the Ironhorse for these reasons at the time:
Looks (Milsim)
Lack of knowledge of other markers and game types.

Only in the last couple of months have I been using it often. It has served me well in bush games but not at all on the speedball field of course.

First off unless you are using a remote coil you don't need the stock at all as you can use a c02 bottle for the same job but better. The stock limits maneuverability which sucks.
The sights are a waste of time because with a mask on you can't even look down them easily and as they are more there for looks the sights are pretty useless and inaccurate. Even tho the marker looks cooler in its original form I chose to get rid of the stock and the m16 sights. This works better because using the c02 bottle as a stock keeps your head down from the gun which means less exposure and the BT-4 combat sights give you an idea of where your paintball is going to go.

The Apex. Well this is a unique option for unique situations which to be honest don't come up very often. I use it for shooting over bushes or use slight amounts of backspin. The backspin makes the ball almost float in the air HOWEVER using the apex doesn't guarantee better accuracy and also decreases FPS which means the ball is less likely to break on impact - which sucks :(
The apex has better range, granted. But will they hit at that range? well that depends on your paint etc but typically not.

I purchased a 14" .69 barrel ($50 NZD) to replace the stock one so I could experiment with them. With certain paint I noticed amazing accuracy increase with the new barrel. I haven't tried using a so called sniper barrel at a ridiculous 20+ inches but I'm sure they wouldn't perform as well as a 12-16". Of course shooting dirty paint or god forbid marbles down your barrel is stupid and will wreck your barrel. If your shooting marbles at people do everyone a favour and give your marker away to someone who deserves it.

Changing all this gear made a much lighter, compact and sometimes more accurate marker which is more idea especially for speedball.

I noticed at a tournament the other day how much the FPS fluctuates (on c02) so am considering HPA. Have had troubles with jams and chops at high Rate Of Fire. I thought it was down to crappy paint but at the tourny I chopped a marballizer so would recommend electro-loaders to keep up if you need it.

Maintenance: This is an area my mates do not excel in and where I see problems with BT-4's. Clean your marker regularly, ASAP if you have chopped balls and have dirt inside the gun. Opened up my mates BT-4 Delta to find brown goo and a rough interior which is not good for cycle speed, looks or efficiency. If your firing a dirty gun with a grubby barrel expect to be shooting all over the place like a r3tard so get yourself a squeegee. When oiling up make sure you use the right oil as some can deteriorate o-rings and make sure you LIGHTLY coat the moving parts. You don't want to be shooting excess oil down your barrel!
P.S: Be careful when screwing the grip back on as over tightening will wreck the plastic where the hexagonal screw is supposed to fit in. If this happens to you and you are clueless how to get the gun apart, get a fine metal saw and cut a grove in the hexagonal screw that is slipping so that you can put a screw driver at one end and an allen key at the other. A lesson learnt at a friends mistake.

Help and support: I have never had to contact BT directly but there is great sources of info on the internet especially this website:
Loads of info, problems and solutions at your fingertips.
Conclusion: This is a great gun that saw me into paintball and I'm going to keep as long as I can. The Ironhorse is ideal for those going for looks. I wouldn't recommend to a newbie on a budget however, they should run with a standard combat and upgrade parts if necessary.
Don't buy guns due to looks because on the field, looks won't win you the game (unless your a hot chick with a nice rack of course!).
I give the review a 7 because the nice looking additives often prove useless and because this gun cannot keep up with the electro guys no matter what field you are playing on. However it is rugged and easy to pull apart etc.

Keep it simple, keep your gun clean and you will get performance.
Thanks for bothering to read my first review :)

BTW could someone confirm whether the stock barrel is .689 bore?
7 out of 10Last edited on Tuesday, March 23rd, 2010 at 10:34 pm PST

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