No.4T modified rear sight.

[Surpmil]

The alternative was to remove the back sight or clean from the muzzle as some snipers preferred not to remove the scope once zeroed. A trials No4(T) I owned had dents in bolt face where it had been cleaned with a rod from the muzzle.

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[GeeRam]

The alternative was to remove the back sight or clean from the muzzle as some snipers preferred not to remove the scope once zeroed. A trials No4(T) I owned had dents in bolt face where it had been cleaned with a rod from the muzzle.

For cleaning, I put a specially shortened empty case in front of the drawn back bolt as a 'just in case' protection for the bolt face when rodding through.

But the other reason, is here in UK I've had the odd occasion with RO's on a range that insist on bolts removed and only re-fitted on the firing point, and then removed before leaving firing point....fortunately not when I've been using the 4T, but the only time my scope has been off the rifle in the past 5 years was during a house move when I had to put my rifles into a RFD, and so I removed the scope before putting into storage.

[mrclark303]

The alternative was to remove the back sight or clean from the muzzle as some snipers preferred not to remove the scope once zeroed. A trials No4(T) I owned had dents in bolt face where it had been cleaned with a rod from the muzzle.

Not sure I would want to do that in the field, no backup sight option dosent seem like a great idea if things go south!