In the U.S. the transition to hammerless pigeon guns was well established by 1895, but American manufactured guns were a distinct minority. That changed within the year, and after the DuPont Pigeon Championship of 1895.

At the Riverton Handicap March 8, 1895 only one of the 15 competitors used an American made gun
https://digital.la84.org/digital/collection/p17103coll17/id/54954
“It may be interesting to some to note the guns and loads used, and we give it below. It was a lamentable fact that of the 15 guns used only one American make was represented. This was a special pigeon gun of the Parker Brothers' manufacture, and was a beautiful weapon in every way, and was owned by Mr. Post, whose score of 93 on a hard lot of birds did not show that the shooting power was lacking.”
“All the guns were 12 gauge, and it was noticeable that not a full pistol-grip stock was among the number, and most of them were the straight-grip ‘pigeon gun’ model, nine being of this description, and six of the half-grip style. All were of the hammerless pattern excepting two; Mr. Welch and Mr. Robbing using hammer guns.
Following is the make of guns and loads used:
Capt. A.W. Money - Greener, 7 1/2 pounds.
George Work - Purdey, 7 1/2 pounds.
Post - Parker pigeon gun (AAH introduced in 1894)), 7 11-16 pounds.
Jim Jones - Scott, 7 3-16 pounds.
John B. Ellison - Scott, 7 1/4 pounds.
Fred Moore - Purdey, 7 7-16 pounds.
Leonard - Westley Richards, 7 1/2 pounds.
Mott - Crown grade Greener, 7 2-16 pounds.
J.S. Robbins - Greener hammer gun, 7 1/2 pounds.
R. Welch - Purdey hammer gun, 7 1/2 pounds
Downing - Scott, 7 6-16 pounds.
J.K. Palmer – Francotte, 7 1/2 pounds.
Edwards - Scott Premier, 7 pounds.
J. Wolstencroft - Greener, 6 15-16 pounds.
Eckert - Scott Premier, 7 1/4 pounds.
Shells were 45 - 49 grains (3 1/4 - 3 1/2 drams) smokeless powder and 1 1/4 oz. shot.
Capt. Money (2nd in the 1894 GAH) and George Work (3rd in the 1893 GAH) tied at 94 killed.