In-Box Review
Object 704 SPH Barrel
Object 704 Self Propelled Howitzer Barrel
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by: Darren Baker [ CMOT ]


With the release of the Trumpeter Object 704 Self Propelled Howitzer, RB Model has released a turned aluminium barrel to replace the metal barrel supplied with the model. It is this new barrel from RB Model that this review looks at.


This turned aluminium barrel from RB Model is supplied packed in a zip-loc plastic bag and is supplied as a single piece. On the front of the zip-loc bag is a self adhesive label with all of the relevant information printed on it.


As I do not have this model from Trumpeter, I am only able to observe one difference between the kit supplied metal barrel and the offering from RB Model. The barrel from RB Model has a raised surround similar to the early QF25 pdr barrel, where as the kit supplied barrel is a smooth transitional taper along its length. The RB Model barrel dimensions are as follows;
  • Length = 65.38mm
  • Muzzle depth = 7.36mm
  • Muzzle bore = 4.16mm
  • Muzzle diameter = 6.45mm
  • Barrel diameter mantlet end = 8.47mm
  • Barrel diameter prior to the muzzle collar = 6.19mm

The depth of the bore is reasonable but will require careful painting to hide the fact that the barrel is not hollow along its full length. The rifling inside the barrel is very subtle and does not rotate as in the real barrel, but the detail does provide a suitable replication of this aspect.


I cannot comment on the accuracy of this barrel as data on the Object 704 Self Propelled Howitzer is not exactly easy to come by, but this barrel does appear the more accurate due to the collar being replicated around the muzzle, which does not appear to be present on the kit supplied offering. Due to the low cost of the product, this barrel is worthy of consideration if for no other reason than the collar being represented.
Highs: This barrel has the collar detail not replicated on the kit offering.
Lows: None that I am aware of, but as stated I could not find any dimensional data.
Verdict: Well worth consideration due to its low price and increased accuracy.
  Scale: 1:35
  Mfg. ID: 35B139
  Suggested Retail: 3.91
  PUBLISHED: Aug 14, 2014

Our Thanks to RB Model!
This item was provided by them for the purpose of having it reviewed on this KitMaker Network site. If you would like your kit, book, or product reviewed, please contact us.

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About Darren Baker (CMOT)

I have been building model kits since the early 70s starting with Airfix kits of mostly aircraft, then progressing to the point I am at now building predominantly armour kits from all countries and time periods. Living in the middle of Salisbury plain since the 70s, I have had lots of opportunitie...

Copyright 2021 text by Darren Baker [ CMOT ]. All rights reserved.


Thanks for review Darren, I need to get one to complete my model!
AUG 15, 2014 - 07:28 PM

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