are the internal guts....two metal rings and rubber O ring in my 1100 the same in the 1187.....
nope the part that makes your 11-87 a 3 and 2.75 gun is gonna get in the way on your 1100
Luke95
i guess i was too general,when i take off the forearm am i going to see the same parts and function of those parts in the 1187 as in my 1100.....or am i going to see some new parts that i have not seem before in my 1100 ??? was just lookn ahead for cleaning and knowhow....