diff --git a/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_bsrmatrix_eti_spec_inst.cpp.in b/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_bsrmatrix_eti_spec_inst.cpp.in
index 9895083764..077150f36c 100644
--- a/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_bsrmatrix_eti_spec_inst.cpp.in
+++ b/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_bsrmatrix_eti_spec_inst.cpp.in
@@ -19,11 +19,9 @@
 #include "KokkosSparse_spmv_bsrmatrix_spec.hpp"
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 // clang-format off
 @SPARSE_SPMV_BSRMATRIX_ETI_INST_BLOCK@
 // clang-format on
 }  // namespace Impl
-}  // namespace Experimental
-}  // namespace KokkosSparse
\ No newline at end of file
+}  // namespace KokkosSparse
diff --git a/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_inst.cpp.in b/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_inst.cpp.in
index d089eca0e3..2c9a6083bf 100644
--- a/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_inst.cpp.in
+++ b/sparse/eti/generated_specializations_cpp/spmv/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_inst.cpp.in
@@ -19,11 +19,9 @@
 #include "KokkosSparse_spmv_bsrmatrix_spec.hpp"
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 // clang-format off
 @SPARSE_SPMV_MV_BSRMATRIX_ETI_INST_BLOCK@
 /// // clang-format on
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
diff --git a/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_bsrmatrix_eti_spec_avail.hpp.in b/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_bsrmatrix_eti_spec_avail.hpp.in
index f98e60ae0d..278b60a813 100644
--- a/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_bsrmatrix_eti_spec_avail.hpp.in
+++ b/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_bsrmatrix_eti_spec_avail.hpp.in
@@ -17,12 +17,10 @@
 #ifndef KOKKOSSPARSE_SPMV_BSRMATRIX_ETI_SPEC_AVAIL_HPP_
 #define KOKKOSSPARSE_SPMV_BSRMATRIX_ETI_SPEC_AVAIL_HPP_
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 // clang-format off
 @SPARSE_SPMV_BSRMATRIX_ETI_AVAIL_BLOCK@
 // clang-format on
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 #endif
diff --git a/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_avail.hpp.in b/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_avail.hpp.in
index df53928266..3247985f4c 100644
--- a/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_avail.hpp.in
+++ b/sparse/eti/generated_specializations_hpp/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_avail.hpp.in
@@ -18,12 +18,10 @@
 #define KOKKOSSPARSE_SPMV_MV_BSRMATRIX_ETI_SPEC_AVAIL_HPP_
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 // clang-format off
 @SPARSE_SPMV_MV_BSRMATRIX_ETI_AVAIL_BLOCK@
 // clang-format on
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 #endif
diff --git a/sparse/impl/KokkosSparse_spmv_bsrmatrix_impl.hpp b/sparse/impl/KokkosSparse_spmv_bsrmatrix_impl.hpp
index 1c2e4f80e9..85e27f1b1b 100644
--- a/sparse/impl/KokkosSparse_spmv_bsrmatrix_impl.hpp
+++ b/sparse/impl/KokkosSparse_spmv_bsrmatrix_impl.hpp
@@ -27,7 +27,6 @@
 #include <mma.h>
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 struct BsrMatrixSpMVTensorCoreFunctorParams {
@@ -519,7 +518,6 @@ struct BsrMatrixSpMVTensorCoreDispatcher {
 };
 
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 #endif  // #if CUDA && (VOLTA || AMPERE)
@@ -537,7 +535,6 @@ struct BsrMatrixSpMVTensorCoreDispatcher {
 #include "KokkosKernels_ExecSpaceUtils.hpp"
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 namespace Bsr {
 
@@ -1735,9 +1732,7 @@ void spMatMultiVec_transpose(const execution_space &exec, Handle *handle,
 /* ******************* */
 
 }  // namespace Bsr
-
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 #endif  // KOKKOSSPARSE_IMPL_SPMV_BSRMATRIX_IMPL_HPP_
diff --git a/sparse/impl/KokkosSparse_spmv_bsrmatrix_spec.hpp b/sparse/impl/KokkosSparse_spmv_bsrmatrix_spec.hpp
index cde7fc1461..5ec3cdb50b 100644
--- a/sparse/impl/KokkosSparse_spmv_bsrmatrix_spec.hpp
+++ b/sparse/impl/KokkosSparse_spmv_bsrmatrix_spec.hpp
@@ -29,7 +29,6 @@
 #endif
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 // default is no eti available
@@ -47,10 +46,6 @@ struct spmv_mv_bsrmatrix_eti_spec_avail {
   enum : bool { value = false };
 };
 
-}  // namespace Impl
-}  // namespace Experimental
-}  // namespace KokkosSparse
-
 #define KOKKOSSPARSE_SPMV_BSRMATRIX_ETI_SPEC_AVAIL(                        \
     SCALAR_TYPE, ORDINAL_TYPE, OFFSET_TYPE, LAYOUT_TYPE, EXEC_SPACE_TYPE,  \
     MEM_SPACE_TYPE)                                                        \
@@ -97,13 +92,15 @@ struct spmv_mv_bsrmatrix_eti_spec_avail {
     enum : bool { value = true };                                          \
   };
 
+}  // namespace Impl
+}  // namespace KokkosSparse
+
 // Include which ETIs are available
 #include <KokkosSparse_spmv_bsrmatrix_tpl_spec_avail.hpp>
 #include <generated_specializations_hpp/KokkosSparse_spmv_bsrmatrix_eti_spec_avail.hpp>
 #include <generated_specializations_hpp/KokkosSparse_spmv_mv_bsrmatrix_eti_spec_avail.hpp>
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 // declaration
@@ -218,8 +215,8 @@ struct SPMV_MV_BSRMATRIX<ExecutionSpace, Handle, AMatrix, XVector, YVector,
     {
       // try to use tensor cores if requested
       if (handle->algo == SPMV_BSR_TC) method = Method::TensorCores;
-      if (!KokkosSparse::Experimental::Impl::TensorCoresAvailable<
-              ExecutionSpace, AMatrix, XVector, YVector>::value) {
+      if (!KokkosSparse::Impl::TensorCoresAvailable<ExecutionSpace, AMatrix,
+                                                    XVector, YVector>::value) {
         method = Method::Fallback;
       }
       // can't use tensor cores unless mode is no-transpose
@@ -365,7 +362,6 @@ struct SPMV_MV_BSRMATRIX<ExecutionSpace, Handle, AMatrix, XVector, YVector,
 #endif  // !defined(KOKKOSKERNELS_ETI_ONLY) ||
         // KOKKOSKERNELS_IMPL_COMPILE_LIBRARY
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 // declare / instantiate the vector version
diff --git a/sparse/src/KokkosSparse_Utils_mkl.hpp b/sparse/src/KokkosSparse_Utils_mkl.hpp
index 2f9437c650..a14e19f3cf 100644
--- a/sparse/src/KokkosSparse_Utils_mkl.hpp
+++ b/sparse/src/KokkosSparse_Utils_mkl.hpp
@@ -62,9 +62,15 @@ inline void mkl_internal_safe_call(sparse_status_t mkl_status, const char *name,
   }
 }
 
+}  // namespace Impl
+}  // namespace KokkosSparse
+
 #define KOKKOSKERNELS_MKL_SAFE_CALL(call) \
   KokkosSparse::Impl::mkl_internal_safe_call(call, #call, __FILE__, __LINE__)
 
+namespace KokkosSparse {
+namespace Impl {
+
 inline sparse_operation_t mode_kk_to_mkl(char mode_kk) {
   switch (toupper(mode_kk)) {
     case 'N': return SPARSE_OPERATION_NON_TRANSPOSE;
diff --git a/sparse/src/KokkosSparse_spmv.hpp b/sparse/src/KokkosSparse_spmv.hpp
index bcff9e29e9..e9a7a5b5e9 100644
--- a/sparse/src/KokkosSparse_spmv.hpp
+++ b/sparse/src/KokkosSparse_spmv.hpp
@@ -337,16 +337,17 @@ void spmv(const ExecutionSpace& space, Handle* handle, const char mode[],
                 typename AMatrix_Internal::non_const_value_type>::name() +
             "]";
         Kokkos::Profiling::pushRegion(label);
-        Experimental::Impl::SPMV_BSRMATRIX<
-            ExecutionSpace, HandleImpl, AMatrix_Internal, XVector_Internal,
-            YVector_Internal, false>::spmv_bsrmatrix(space, handle, mode, alpha,
-                                                     A_i, x_i, beta, y_i);
+        Impl::SPMV_BSRMATRIX<ExecutionSpace, HandleImpl, AMatrix_Internal,
+                             XVector_Internal, YVector_Internal,
+                             false>::spmv_bsrmatrix(space, handle, mode, alpha,
+                                                    A_i, x_i, beta, y_i);
         Kokkos::Profiling::popRegion();
       } else {
-        Experimental::Impl::SPMV_BSRMATRIX<
-            ExecutionSpace, HandleImpl, AMatrix_Internal, XVector_Internal,
-            YVector_Internal>::spmv_bsrmatrix(space, handle, mode, alpha, A_i,
-                                              x_i, beta, y_i);
+        Impl::SPMV_BSRMATRIX<ExecutionSpace, HandleImpl, AMatrix_Internal,
+                             XVector_Internal,
+                             YVector_Internal>::spmv_bsrmatrix(space, handle,
+                                                               mode, alpha, A_i,
+                                                               x_i, beta, y_i);
       }
     } else {
       /////////////////
@@ -376,7 +377,7 @@ void spmv(const ExecutionSpace& space, Handle* handle, const char mode[],
                 typename AMatrix_Internal::non_const_value_type>::name() +
             "]";
         Kokkos::Profiling::pushRegion(label);
-        Experimental::Impl::SPMV_MV_BSRMATRIX<
+        Impl::SPMV_MV_BSRMATRIX<
             ExecutionSpace, HandleImpl, AMatrix_Internal, XVector_Internal,
             YVector_Internal,
             std::is_integral<
@@ -385,7 +386,7 @@ void spmv(const ExecutionSpace& space, Handle* handle, const char mode[],
                                       beta, y_i);
         Kokkos::Profiling::popRegion();
       } else {
-        Experimental::Impl::SPMV_MV_BSRMATRIX<
+        Impl::SPMV_MV_BSRMATRIX<
             ExecutionSpace, HandleImpl, AMatrix_Internal, XVector_Internal,
             YVector_Internal,
             std::is_integral<typename AMatrix_Internal::const_value_type>::
diff --git a/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_avail.hpp b/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_avail.hpp
index 3a68ba348e..16bf1abecf 100644
--- a/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_avail.hpp
+++ b/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_avail.hpp
@@ -22,7 +22,6 @@
 #endif
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 // Specialization struct which defines whether a specialization exists
 template <class ExecutionSpace, class Handle, class AMatrix, class XVector,
@@ -348,7 +347,6 @@ KOKKOSSPARSE_SPMV_BSRMATRIX_TPL_SPEC_AVAIL_ROCSPARSE(Kokkos::complex<double>,
 #endif  // defined(KOKKOSKERNELS_ENABLE_TPL_ROCSPARSE)
 
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 #endif  // KOKKOSPARSE_SPMV_BSRMATRIX_TPL_SPEC_AVAIL_HPP_
diff --git a/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_decl.hpp b/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_decl.hpp
index 875913214c..c1d4744920 100644
--- a/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_decl.hpp
+++ b/sparse/tpls/KokkosSparse_spmv_bsrmatrix_tpl_spec_decl.hpp
@@ -26,13 +26,10 @@
 #include <mkl.h>
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 // MKL 2018 and above: use new interface: sparse_matrix_t and mkl_sparse_?_mv()
 
-using KokkosSparse::Impl::mode_kk_to_mkl;
-
 // Note: Scalar here is the Kokkos type, not the MKL type
 template <typename Scalar, typename Handle>
 inline void spmv_bsr_mkl(Handle* handle, sparse_operation_t op, Scalar alpha,
@@ -338,7 +335,6 @@ KOKKOSSPARSE_SPMV_MV_MKL(Kokkos::complex<double>, Kokkos::OpenMP,
 #undef KOKKOSSPARSE_SPMV_MV_MKL
 
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 #endif  // defined(KOKKOSKERNELS_ENABLE_TPL_MKL) && (__INTEL_MKL__ > 2017)
@@ -359,7 +355,6 @@ KOKKOSSPARSE_SPMV_MV_MKL(Kokkos::complex<double>, Kokkos::OpenMP,
 #include "KokkosSparse_Utils_cusparse.hpp"
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 template <class Handle, class AMatrix, class XVector, class YVector>
@@ -765,7 +760,6 @@ KOKKOSSPARSE_SPMV_MV_CUSPARSE(Kokkos::complex<float>, int, int,
 #undef KOKKOSSPARSE_SPMV_MV_CUSPARSE
 
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 #endif  // (9000 <= CUDA_VERSION)
 
@@ -781,7 +775,6 @@ KOKKOSSPARSE_SPMV_MV_CUSPARSE(Kokkos::complex<float>, int, int,
 #include "KokkosSparse_Utils_rocsparse.hpp"
 
 namespace KokkosSparse {
-namespace Experimental {
 namespace Impl {
 
 template <class Handle, class AMatrix, class XVector, class YVector>
@@ -1101,7 +1094,6 @@ KOKKOSSPARSE_SPMV_ROCSPARSE(Kokkos::complex<double>, rocsparse_int,
 #undef KOKKOSSPARSE_SPMV_ROCSPARSE
 
 }  // namespace Impl
-}  // namespace Experimental
 }  // namespace KokkosSparse
 
 #endif  // defined(KOKKOSKERNELS_ENABLE_TPL_ROCSPARSE)