I now own three externally adjustable Fecker ¾” scopes. Two are mounted on BPCR silhouette rifles and one on a Stevens 44 .22LR. Only one came with lens housing caps (end caps). Needing two sets of caps I ran across a thread on the American Single Shot Rifle Association (ASSRA) forum indicating a fellow by the name of Sam Marshall (aka nuclearcricket) makes steel caps for what I consider to be an unbeatable price. Sam has experience making caps for Unertl scopes but not for Feckers, which are different. So I sent him an original cap and the necessary funds for two new sets.
In a couple of weeks the new caps arrived. They looked great and fit perfectly. They’re in the “white” (unblued) with a knurled edge so you’ll have to blue them if desired. As of this writing the caps are $10 each ($20 for a set of two) plus shipping, regardless of the size. I did not ask but Sam may be willing to make them in aluminum if you prefer.
Sam has the dimensions for Unertl’s 1&1/4” target scope and now Fecker’s 3/4” 20.5” long scope. Note: it’s not Fecker’s Small Game Scope but may use the same caps. Also note that Unertl and Fecker caps are not the same – dimensions and thread pitch are different. Sam indicated, “For any other sizes I am willing to work with the owner to get caps to fit”. If you frequent the ASSRA discussion forum, he can be reached with a PM using his “nuclearcricket” handle. Otherwise his contact information is listed below.
If you’re like me, the caps get misplaced in range boxes or inadvertently dropped on the ground, never to be found again. So while you’re ordering, have Sam make one or two spares. You can’t beat the price. And keep in mind, the caps not only help to eliminate dust and other contaminates from collecting on the lenses, they protect the rim and threads of the lens housing from damage. Hopefully you’ll never need to remove the lenses for repair or replacement, but if you do it will almost be impossible if the threads are damaged. And a bent lens housing detracts from the overall appearance of a nice looking rifle scope combination.
By the way, it should be obvious but I’ll caution you anyway. If the rim of your scopes lens housing is bent or the threads are damaged, don’t expect the caps Sam sends you to fit easily or at all without a good bit of work on your part. If they do thread in but are tight or hit tight spots, they can be lapped in using automotive valve grinding compound or better yet, J-B Bore Cleaning Compound. Use the compound sparingly on the cap threads and be sure to protect the scope lenses. The abrasive material in the compounds will damage the lens coating. One technique to help protect the lens is to tape over it. Repeatedly screwing the cap in and out should remove the tight spots if it’s not too bad. I use Q-Tips soaked in solvent to gently remove the compound afterwards while ensuring the solvent does not contact the lens as it may remove the lens coatings. Only alcohol is applied to the lenses in my scopes when cleaning.